<?xml version="1.0" encoding="US-ASCII"?>
<!-- RR Donnelley Xcelerate Taxonomy Labels Linkbase, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
<!-- Version: 6.21.0 -->
<!-- Round: 5 -->
<!-- Creation date: 2013-11-08T17:52:01Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley &amp; Sons Company All Rights Reserved. -->
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AcceleratedShareRepurchasesInitialPricePaidPerShare" xlink:label="us-gaap_AcceleratedShareRepurchasesInitialPricePaidPerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AcceleratedShareRepurchasesInitialPricePaidPerShare_lbl" xml:lang="en-US" id="id_2692546_927187_1_1">Accelerated Share Repurchases Initial Price Paid Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AcceleratedShareRepurchasesInitialPricePaidPerShare_lbl" xml:lang="en-US" id="id_2692546_927187_2_1">Common stock initial exercise price</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_2692546_933775_1_1">Accounts Payable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_2692546_933775_2_1">Accounts payable</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsReceivableGross" xlink:label="us-gaap_AccountsReceivableGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableGross_lbl" xml:lang="en-US" id="id_2692546_937029_1_1">Accounts Receivable Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableGross_lbl" xml:lang="en-US" id="id_2692546_937029_2_1">Accounts receivable, net</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="us-gaap_AccountsReceivableNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US" id="id_2692546_939981_1_1">Accounts Receivable Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US" id="id_2692546_939981_2_1">Loan made to NMI</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_2692546_938700_1_1">Accounts Receivable Net Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_2692546_938700_2_1">Accounts receivable and other, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_2692546_938700_12_1">Accounts receivable, net</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableRelatedParties_lbl" xml:lang="en-US" id="id_2692546_938785_1_1">Accounts Receivable Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsReceivableRelatedParties_lbl" xml:lang="en-US" id="id_2692546_938785_2_1">Receivable reserve</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableRelatedParties" xlink:to="us-gaap_AccountsReceivableRelatedParties_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AccountsReceivablesTransferredBetweenRelatedParties" xlink:label="omex_AccountsReceivablesTransferredBetweenRelatedParties"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AccountsReceivablesTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_987464_3_1">Accounts receivables transferred between related parties.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AccountsReceivablesTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_987464_1_1">Accounts Receivables Transferred Between Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AccountsReceivablesTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_987464_2_1">Accounts receivable transferred between related parties</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AccountsReceivableTransferredBetweenRelatedParties" xlink:label="omex_AccountsReceivableTransferredBetweenRelatedParties"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AccountsReceivableTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_984579_3_1">Accounts receivable transferred between related parties.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AccountsReceivableTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_984579_1_1">Accounts Receivable Transferred Between Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AccountsReceivableTransferredBetweenRelatedParties_lbl" xml:lang="en-US" id="id_2692546_984579_2_1">Outstanding debt</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2692546_933113_1_1">Accrued Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2692546_933113_2_1">Accrued expenses and other</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2692546_933479_1_1">Accumulated Depreciation Depletion And Amortization Property Plant And Equipment</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AdditionalFinancingMember" xlink:label="omex_AdditionalFinancingMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AdditionalFinancingMember_lbl" xml:lang="en-US" id="id_2692546_958379_3_1">Additional financing.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AdditionalFinancingMember_lbl" xml:lang="en-US" id="id_2692546_958379_2_1">Additional Financing [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_AdditionalFinancingMember" xlink:to="omex_AdditionalFinancingMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AdditionalNotesMember" xlink:label="omex_AdditionalNotesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AdditionalNotesMember_lbl" xml:lang="en-US" id="id_2692546_949197_3_1">Additional notes.</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_933723_1_1">Additional Paid In Capital</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_929248_1_1">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_929248_2_1">Adjustments to reconcile net loss to net cash (used) by operating activities:</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_2692546_940280_1_1">Allocated Share Based Compensation Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_2692546_940280_2_1">Share-based compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AllocationOfCashPreferredStockIssuanceTableTextBlock" xlink:label="omex_AllocationOfCashPreferredStockIssuanceTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AllocationOfCashPreferredStockIssuanceTableTextBlock_lbl" xml:lang="en-US" id="id_2692546_1131769_3_1">Allocation of cash preferred stock issuance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AllocationOfCashPreferredStockIssuanceTableTextBlock_lbl" xml:lang="en-US" id="id_2692546_1131769_1_1">Allocation Of Cash Preferred Stock Issuance Table [Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xml:lang="en-US" id="id_2692546_927484_2_1">Antidilutive Securities, Name [Domain]</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_Artifacts" xlink:label="omex_Artifacts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_Artifacts_lbl" xml:lang="en-US" id="id_2692546_1028697_3_1">Artifacts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_Artifacts_lbl" xml:lang="en-US" id="id_2692546_1028697_1_1">Artifacts</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_2692546_928450_2_1">ASSETS</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_2692546_926145_2_1">CURRENT ASSETS</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AttorneyFeesAssessed_lbl" xml:lang="en-US" id="id_2692546_1224225_3_1">Attorney fees assessed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AttorneyFeesAssessed_lbl" xml:lang="en-US" id="id_2692546_1224225_1_1">Attorney Fees Assessed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AttorneyFeesAssessed_lbl" xml:lang="en-US" id="id_2692546_1224225_2_1">Attorney fees</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_AttorneyFeesAssessed" xlink:to="omex_AttorneyFeesAssessed_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_AttorneyFeesIncludedInMarketingGeneralAndAdministrativeExpenses" xlink:label="omex_AttorneyFeesIncludedInMarketingGeneralAndAdministrativeExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AttorneyFeesIncludedInMarketingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" id="id_2692546_1224226_3_1">Attorney fees included in marketing general and administrative expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AttorneyFeesIncludedInMarketingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" id="id_2692546_1224226_1_1">Attorney Fees Included In Marketing General And Administrative Expenses</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_BahamianCompanyMember" xlink:label="omex_BahamianCompanyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_BahamianCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1185045_3_1">Bahamian Company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_BahamianCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1185045_1_1">Bahamian Company [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_BahamianCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1185045_2_1">Bahamian Deposit Insurance Corporation [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_BahamianCompanyMember" xlink:to="omex_BahamianCompanyMember_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_BorrowingBaseValueOfSecuredCollateralPercentage_lbl" xml:lang="en-US" id="id_2692546_1053392_3_1">Borrowing base value of secured collateral percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_BorrowingBaseValueOfSecuredCollateralPercentage_lbl" xml:lang="en-US" id="id_2692546_1053392_1_1">Borrowing Base Value Of Secured Collateral Percentage</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_BuildingAndLand" xlink:label="omex_BuildingAndLand"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_BuildingAndLand_lbl" xml:lang="en-US" id="id_2692546_993267_3_1">Building and land.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_BuildingAndLand_lbl" xml:lang="en-US" id="id_2692546_993267_1_1">Building And Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_BuildingAndLand_lbl" xml:lang="en-US" id="id_2692546_993267_2_1">Building and land</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_BuildingAndLand" xlink:to="omex_BuildingAndLand_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_2692546_926379_1_1">Business Acquisition Acquiree [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_2692546_926379_2_1">Business Acquisition, Acquiree [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_2692546_928576_1_1">Business Acquisition [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_2692546_928576_2_1">Business Acquisition [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="us-gaap_BusinessCombinationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xml:lang="en-US" id="id_2692546_932588_1_1">Business Combinations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xml:lang="en-US" id="id_2692546_932588_2_1">Business Combinations [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_BusinessCombinationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CambridgeProjectMember" xlink:label="omex_CambridgeProjectMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CambridgeProjectMember_lbl" xml:lang="en-US" id="id_2692546_984426_3_1">Cambridge project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CambridgeProjectMember_lbl" xml:lang="en-US" id="id_2692546_984426_1_1">Cambridge Project [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xml:lang="en-US" id="id_2692546_933659_1_1">Capital Expenditures Incurred But Not Yet Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xml:lang="en-US" id="id_2692546_933659_2_1">Equipment purchased with financing</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="us-gaap_CashAndCashEquivalentsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAbstract_lbl" xml:lang="en-US" id="id_2692546_932055_1_1">Cash And Cash Equivalents [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAbstract_lbl" xml:lang="en-US" id="id_2692546_932055_2_1">Cash and Cash Equivalents [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2692546_938283_1_1">Cash And Cash Equivalents At Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2692546_938283_4_1">CASH AT END OF PERIOD</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_928355_1_1">Cash And Cash Equivalents Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_928355_2_1">Restricted Cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_938600_1_1">Cash And Cash Equivalents Period Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_938600_6_1">NET INCREASE (DECREASE) IN CASH</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928679_1_1">Cash And Cash Equivalents Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928679_2_1">Cash, Cash Equivalents and Restricted Cash</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_925504_1_1">Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_925504_2_1">NON-CASH TRANSACTIONS:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashUninsuredAmount" xlink:label="us-gaap_CashUninsuredAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US" id="id_2692546_939135_1_1">Cash Uninsured Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashUninsuredAmount_lbl" xml:lang="en-US" id="id_2692546_939135_2_1">Uninsured cash balance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashUninsuredAmount" xlink:to="us-gaap_CashUninsuredAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CharterAgreementPeriod" xlink:label="omex_CharterAgreementPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CharterAgreementPeriod_lbl" xml:lang="en-US" id="id_2692546_1002969_3_1">Charter agreement period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CharterAgreementPeriod_lbl" xml:lang="en-US" id="id_2692546_1002969_1_1">Charter Agreement Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CharterAgreementPeriod_lbl" xml:lang="en-US" id="id_2692546_1002969_2_1">Charter agreement period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CharterAgreementPeriod" xlink:to="omex_CharterAgreementPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ChathamRockPhosphateLtdMember" xlink:label="omex_ChathamRockPhosphateLtdMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ChathamRockPhosphateLtdMember_lbl" xml:lang="en-US" id="id_2692546_1040798_3_1">Chatham rock phosphate ltd.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ChathamRockPhosphateLtdMember_lbl" xml:lang="en-US" id="id_2692546_1040798_1_1">Chatham Rock Phosphate Ltd [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ChathamRockPhosphateLtdMember_lbl" xml:lang="en-US" id="id_2692546_1040798_2_1">Chatham Rock Phosphate, Ltd. [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ChathamRockPhosphateLtdMember" xlink:to="omex_ChathamRockPhosphateLtdMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US" id="id_2692546_932584_1_1">Class Of Stock [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfStockDomain_lbl" xml:lang="en-US" id="id_2692546_932584_2_1">Class of Stock [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights" xlink:label="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_1103010_3_1">Class of warrant or right adjusted exercise price of warrants or rights.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_1103010_1_1">Class Of Warrant Or Right Adjusted Exercise Price Of Warrants Or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_1103010_2_1">Adjusted warrants exercise price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights" xlink:to="omex_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_932954_1_1">Class Of Warrant Or Right Exercise Price Of Warrants Or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_932954_32_1">Warrants exercise price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_932954_2_1">Class of warrant or right, exercise price of warrant or rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_932954_12_1">Warrant exercise price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_925087_1_1">Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xml:lang="en-US" id="id_2692546_925087_2_1">Common shares issuable upon exercise of warrant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" id="id_2692546_929417_1_1">Class Of Warrant Or Right Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" id="id_2692546_929417_2_1">Number of warrants exercised in exchange for common stock shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_2692546_936604_1_1">Commitments And Contingencies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_2692546_936604_2_1">Commitments and contingencies (Note H)</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_930041_1_1">Commitments And Contingencies Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_930041_2_1">Commitments and Contingencies Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_923990_1_1">Commitments And Contingencies Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_923990_2_1">Commitments and Contingencies</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CommonSharesIssuedPerUnit" xlink:label="omex_CommonSharesIssuedPerUnit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommonSharesIssuedPerUnit_lbl" xml:lang="en-US" id="id_2692546_1070012_3_1">Common shares issued per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommonSharesIssuedPerUnit_lbl" xml:lang="en-US" id="id_2692546_1070012_1_1">Common Shares Issued Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CommonSharesIssuedPerUnit_lbl" xml:lang="en-US" id="id_2692546_1070012_2_1">Common shares, issued, per unit</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_2692546_930643_1_1">Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_2692546_930643_2_1">Common Stock [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockOtherSharesOutstanding" xlink:label="us-gaap_CommonStockOtherSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockOtherSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_929381_1_1">Common Stock Other Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockOtherSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_929381_2_1">Common shares linked to derivative liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockOtherSharesOutstanding" xlink:to="us-gaap_CommonStockOtherSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_931741_1_1">Common Stock Par Or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_931741_2_1">Common stock, par value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_930676_1_1">Common Stock Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_930676_2_1">Common stock, shares authorized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CommonStockSharesExchangesFromWarrants" xlink:label="omex_CommonStockSharesExchangesFromWarrants"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommonStockSharesExchangesFromWarrants_lbl" xml:lang="en-US" id="id_2692546_1085909_3_1">Common stock shares exchanges from warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommonStockSharesExchangesFromWarrants_lbl" xml:lang="en-US" id="id_2692546_1085909_1_1">Common Stock Shares Exchanges From Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CommonStockSharesExchangesFromWarrants_lbl" xml:lang="en-US" id="id_2692546_1085909_2_1">Common stock shares exchanges from warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CommonStockSharesExchangesFromWarrants" xlink:to="omex_CommonStockSharesExchangesFromWarrants_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_2692546_925763_1_1">Common Stock Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_2692546_925763_2_1">Common stock, shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount" xlink:label="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount_lbl" xml:lang="en-US" id="id_2692546_1070794_3_1">Common stock shares issued as payment related to outstanding principal amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount_lbl" xml:lang="en-US" id="id_2692546_1070794_1_1">Common Stock Shares Issued As Payment Related To Outstanding Principal Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount_lbl" xml:lang="en-US" id="id_2692546_1070794_2_1">Common stock shares issued as payment in outstanding principal</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount" xlink:to="omex_CommonStockSharesIssuedAsPaymentRelatedToOutstandingPrincipalAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CommonStockSharesOptionFromWarrants" xlink:label="omex_CommonStockSharesOptionFromWarrants"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommonStockSharesOptionFromWarrants_lbl" xml:lang="en-US" id="id_2692546_952305_3_1">Common stock shares option from warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommonStockSharesOptionFromWarrants_lbl" xml:lang="en-US" id="id_2692546_952305_1_1">Common Stock Shares Option From Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CommonStockSharesOptionFromWarrants_lbl" xml:lang="en-US" id="id_2692546_952305_2_1">Common stock shares option from warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CommonStockSharesOptionFromWarrants" xlink:to="omex_CommonStockSharesOptionFromWarrants_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_923588_1_1">Common Stock Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_923588_2_1">Common stock, shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_2692546_935685_1_1">Common Stock Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_2692546_935685_2_1">Common stock - $.0001 par value; 150,000,000 shares authorized; 81,484,779 and 75,416,203 issued and outstanding, respectively</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_2692546_935685_12_1">Common stock, shares value representing payment for principal</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAbstract_lbl" xml:lang="en-US" id="id_2692546_923900_1_1">Components Of Deferred Tax Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAbstract_lbl" xml:lang="en-US" id="id_2692546_923900_2_1">Deferred tax assets:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_ComponentsOfDeferredTaxAssetsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:label="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_932121_1_1">Components Of Deferred Tax Liabilities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_932121_2_1">Deferred tax liability:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ComprehensiveIncomePolicyTextBlock" xlink:label="omex_ComprehensiveIncomePolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ComprehensiveIncomePolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_958002_3_1">Comprehensive income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ComprehensiveIncomePolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_958002_1_1">Comprehensive Income Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ComprehensiveIncomePolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_958002_2_1">Comprehensive Income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ComprehensiveIncomePolicyTextBlock" xlink:to="omex_ComprehensiveIncomePolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ConcentrationOfCreditRiskLineItems" xlink:label="omex_ConcentrationOfCreditRiskLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ConcentrationOfCreditRiskLineItems_lbl" xml:lang="en-US" id="id_2692546_1099182_3_1">Concentration of credit risk.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ConcentrationOfCreditRiskLineItems_lbl" xml:lang="en-US" id="id_2692546_1099182_1_1">Concentration Of Credit Risk [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ConcentrationOfCreditRiskLineItems_lbl" xml:lang="en-US" id="id_2692546_1099182_2_1">Concentration Of Credit Risk [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ConcentrationOfCreditRiskLineItems" xlink:to="omex_ConcentrationOfCreditRiskLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskDisclosureTextBlock" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926312_1_1">Concentration Risk Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926312_2_1">Concentration of Credit Risk</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskDisclosureTextBlock" xlink:to="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="us-gaap_ConsolidationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_926878_1_1">Consolidation Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_926878_2_1">Principles of Consolidation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationPolicyTextBlock" xlink:to="us-gaap_ConsolidationPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ContractualCostRecoupment" xlink:label="omex_ContractualCostRecoupment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ContractualCostRecoupment_lbl" xml:lang="en-US" id="id_2692546_1224130_3_1">Contractual cost recoupment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ContractualCostRecoupment_lbl" xml:lang="en-US" id="id_2692546_1224130_1_1">Contractual Cost Recoupment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ContractualCostRecoupment_lbl" xml:lang="en-US" id="id_2692546_1224130_2_1">Contractual cost recoupment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ContractualCostRecoupment" xlink:to="omex_ContractualCostRecoupment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConversionOfStockSharesConverted1" xlink:label="us-gaap_ConversionOfStockSharesConverted1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConversionOfStockSharesConverted1_lbl" xml:lang="en-US" id="id_2692546_926028_1_1">Conversion Of Stock Shares Converted 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConversionOfStockSharesConverted1_lbl" xml:lang="en-US" id="id_2692546_926028_2_1">Net share position in NMI</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConversionOfStockSharesConverted1" xlink:to="us-gaap_ConversionOfStockSharesConverted1_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ConversionPeriodImmediatelyPriorToApplicable" xlink:label="omex_ConversionPeriodImmediatelyPriorToApplicable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ConversionPeriodImmediatelyPriorToApplicable_lbl" xml:lang="en-US" id="id_2692546_1039607_3_1">Conversion period immediately prior to applicable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ConversionPeriodImmediatelyPriorToApplicable_lbl" xml:lang="en-US" id="id_2692546_1039607_1_1">Conversion Period Immediately Prior To Applicable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ConversionPeriodImmediatelyPriorToApplicable_lbl" xml:lang="en-US" id="id_2692546_1039607_2_1">Conversion price applicable period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ConversionPeriodImmediatelyPriorToApplicable" xlink:to="omex_ConversionPeriodImmediatelyPriorToApplicable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConvertibleNotesPayable" xlink:label="us-gaap_ConvertibleNotesPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2692546_936351_1_1">Convertible Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2692546_936351_2_1">Convertible notes payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2692546_936351_12_1">Settlement of promissory notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleNotesPayable" xlink:to="us-gaap_ConvertibleNotesPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConvertibleNotesPayableMember" xlink:label="us-gaap_ConvertibleNotesPayableMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xml:lang="en-US" id="id_2692546_924725_1_1">Convertible Notes Payable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xml:lang="en-US" id="id_2692546_924725_2_1">Face Value $10,000,000, 8% Convertible Senior Note Payable [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleNotesPayableMember" xlink:to="us-gaap_ConvertibleNotesPayableMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="us-gaap_ConvertiblePreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertiblePreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_932377_1_1">Convertible Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertiblePreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_932377_2_1">Convertible Preferred Stock Excluded from EPS [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertiblePreferredStockMember" xlink:to="us-gaap_ConvertiblePreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ConvertiblePreferredStockSharesConverted" xlink:label="omex_ConvertiblePreferredStockSharesConverted"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ConvertiblePreferredStockSharesConverted_lbl" xml:lang="en-US" id="id_2692546_1166758_3_1">Convertible preferred stock shares converted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ConvertiblePreferredStockSharesConverted_lbl" xml:lang="en-US" id="id_2692546_1166758_1_1">Convertible Preferred Stock Shares Converted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ConvertiblePreferredStockSharesConverted_lbl" xml:lang="en-US" id="id_2692546_1166758_2_1">Number of series G preferred stock converted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ConvertiblePreferredStockSharesConverted" xlink:to="omex_ConvertiblePreferredStockSharesConverted_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion_lbl" xml:lang="en-US" id="id_2692546_931255_1_1">Convertible Preferred Stock Shares Issued Upon Conversion</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion" xlink:to="us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CorporateNoteSecuritiesMember" xlink:label="us-gaap_CorporateNoteSecuritiesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CorporateNoteSecuritiesMember_lbl" xml:lang="en-US" id="id_2692546_932505_1_1">Corporate Note Securities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CorporateNoteSecuritiesMember_lbl" xml:lang="en-US" id="id_2692546_932505_2_1">Initial Note [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateNoteSecuritiesMember" xlink:to="us-gaap_CorporateNoteSecuritiesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="us-gaap_CostOfGoodsSold"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostOfGoodsSold_lbl" xml:lang="en-US" id="id_2692546_937862_1_1">Cost Of Goods Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CostOfGoodsSold_lbl" xml:lang="en-US" id="id_2692546_937862_2_1">Cost of sales - artifacts and other</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CounterpartyNameAxis" xlink:label="us-gaap_CounterpartyNameAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CounterpartyNameAxis_lbl" xml:lang="en-US" id="id_2692546_933025_1_1">Counterparty Name [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CounterpartyNameAxis_lbl" xml:lang="en-US" id="id_2692546_933025_2_1">Counterparty Name [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CounterpartyNameAxis" xlink:to="us-gaap_CounterpartyNameAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CreditRiskAdjustmentRate" xlink:label="omex_CreditRiskAdjustmentRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CreditRiskAdjustmentRate_lbl" xml:lang="en-US" id="id_2692546_1013020_3_1">Credit risk adjustment rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CreditRiskAdjustmentRate_lbl" xml:lang="en-US" id="id_2692546_1013020_1_1">Credit Risk Adjustment Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CreditRiskAdjustmentRate_lbl" xml:lang="en-US" id="id_2692546_1013020_2_1">Credit-risk adjusted rates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CreditRiskAdjustmentRate" xlink:to="omex_CreditRiskAdjustmentRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_CumulativeAndOutstandingLosses" xlink:label="omex_CumulativeAndOutstandingLosses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CumulativeAndOutstandingLosses_lbl" xml:lang="en-US" id="id_2692546_1049918_3_1">Cumulative and outstanding losses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CumulativeAndOutstandingLosses_lbl" xml:lang="en-US" id="id_2692546_1049918_1_1">Cumulative And Outstanding Losses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CumulativeAndOutstandingLosses_lbl" xml:lang="en-US" id="id_2692546_1049918_2_1">Loss from unconsolidated entity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CumulativeAndOutstandingLosses" xlink:to="omex_CumulativeAndOutstandingLosses_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_940589_1_1">Current Federal Tax Expense Benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_940589_2_1">Federal</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_2692546_922004_1_1">Current Fiscal Year End Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_2692546_922004_2_1">Current Fiscal Year End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_940132_1_1">Current Income Tax Expense Benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_940132_6_1">Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_2692546_929551_1_1">Current Income Tax Expense Benefit Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl" xml:lang="en-US" id="id_2692546_929551_2_1">Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_938754_1_1">Current State And Local Tax Expense Benefit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_938754_2_1">State</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xml:lang="en-US" id="id_2692546_935911_1_1">Debt Conversion Converted Instrument Amount 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xml:lang="en-US" id="id_2692546_935911_2_1">Accounts receivable converted to common shares, amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xml:lang="en-US" id="id_2692546_935911_12_1">Debt repayment with common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentAmount1" xlink:to="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentSharesIssued1" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xml:lang="en-US" id="id_2692546_930446_1_1">Debt Conversion Converted Instrument Shares Issued 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xml:lang="en-US" id="id_2692546_930446_2_1">Converted common shares received</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentSharesIssued1" xlink:to="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentType" xlink:label="us-gaap_DebtConversionConvertedInstrumentType"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtConversionConvertedInstrumentType_lbl" xml:lang="en-US" id="id_2692546_932689_1_1">Debt Conversion Converted Instrument Type</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtConversionConvertedInstrumentType_lbl" xml:lang="en-US" id="id_2692546_932689_2_1">Debt instrument amortization payment description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionConvertedInstrumentType" xlink:to="us-gaap_DebtConversionConvertedInstrumentType_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="us-gaap_DebtDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_928741_1_1">Debt Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_928741_2_1">Debt Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_2692546_926396_1_1">Debt Instrument [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="id_2692546_926396_2_1">Debt Instrument [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentBasisSpreadOnVariableRatePoints" xlink:label="omex_DebtInstrumentBasisSpreadOnVariableRatePoints"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentBasisSpreadOnVariableRatePoints_lbl" xml:lang="en-US" id="id_2692546_1018329_3_1">Debt instrument basis spread on variable rate points.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentBasisSpreadOnVariableRatePoints_lbl" xml:lang="en-US" id="id_2692546_1018329_1_1">Debt Instrument Basis Spread On Variable Rate Points</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentBasisSpreadOnVariableRatePoints_lbl" xml:lang="en-US" id="id_2692546_1018329_2_1">Basis spread on variable rate, points</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentBasisSpreadOnVariableRatePoints" xlink:to="omex_DebtInstrumentBasisSpreadOnVariableRatePoints_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US" id="id_2692546_933381_1_1">Debt Instrument Carrying Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US" id="id_2692546_933381_2_1">Principal amount outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCarryingAmount" xlink:to="us-gaap_DebtInstrumentCarryingAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentCollateralAmount" xlink:label="us-gaap_DebtInstrumentCollateralAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCollateralAmount_lbl" xml:lang="en-US" id="id_2692546_937613_1_1">Debt Instrument Collateral Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCollateralAmount_lbl" xml:lang="en-US" id="id_2692546_937613_2_1">Project term loan collateral value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCollateralAmount" xlink:to="us-gaap_DebtInstrumentCollateralAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentConversionResetConversionPriceDescription" xlink:label="omex_DebtInstrumentConversionResetConversionPriceDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentConversionResetConversionPriceDescription_lbl" xml:lang="en-US" id="id_2692546_964849_3_1">Debt instrument conversion reset conversion price description.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentConversionResetConversionPriceDescription_lbl" xml:lang="en-US" id="id_2692546_964849_1_1">Debt Instrument Conversion Reset Conversion Price Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentConversionResetConversionPriceDescription_lbl" xml:lang="en-US" id="id_2692546_964849_2_1">Debt instrument conversion reset conversion price description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentConversionResetConversionPriceDescription" xlink:to="omex_DebtInstrumentConversionResetConversionPriceDescription_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xml:lang="en-US" id="id_2692546_925437_1_1">Debt Instrument Convertible Conversion Price 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xml:lang="en-US" id="id_2692546_925437_2_1">Conversion share price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xml:lang="en-US" id="id_2692546_925437_12_1">Initial conversion price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity" xlink:label="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity_lbl" xml:lang="en-US" id="id_2692546_1224140_3_1">Debt instrument convertible conversion price before maturity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity_lbl" xml:lang="en-US" id="id_2692546_1224140_1_1">Debt Instrument Convertible Conversion Price Before Maturity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity_lbl" xml:lang="en-US" id="id_2692546_1224140_2_1">Conversion price per share related to option elected</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity" xlink:to="omex_DebtInstrumentConvertibleConversionPriceBeforeMaturity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentConvertibleStockPriceTrigger" xlink:label="us-gaap_DebtInstrumentConvertibleStockPriceTrigger"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleStockPriceTrigger_lbl" xml:lang="en-US" id="id_2692546_926874_1_1">Debt Instrument Convertible Stock Price Trigger</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleStockPriceTrigger_lbl" xml:lang="en-US" id="id_2692546_926874_2_1">Debt instrument conversion price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleStockPriceTrigger" xlink:to="us-gaap_DebtInstrumentConvertibleStockPriceTrigger_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature" xlink:label="us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature_lbl" xml:lang="en-US" id="id_2692546_926408_1_1">Debt Instrument Convertible Terms Of Conversion Feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature_lbl" xml:lang="en-US" id="id_2692546_926408_2_1">Debt instrument amortization payment description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature" xlink:to="us-gaap_DebtInstrumentConvertibleTermsOfConversionFeature_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_2692546_935575_1_1">Debt Instrument Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_2692546_935575_32_1">Restricted cash for term loan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_2692546_935575_2_1">Company's consolidated debt, face amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_2692546_935575_12_1">Original principal amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentFeeAmount" xlink:label="us-gaap_DebtInstrumentFeeAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFeeAmount_lbl" xml:lang="en-US" id="id_2692546_939927_1_1">Debt Instrument Fee Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentFeeAmount_lbl" xml:lang="en-US" id="id_2692546_939927_2_1">Commitment fee</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFeeAmount" xlink:to="us-gaap_DebtInstrumentFeeAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentInitialPayment" xlink:label="omex_DebtInstrumentInitialPayment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentInitialPayment_lbl" xml:lang="en-US" id="id_2692546_1075352_3_1">Debt instrument, initial payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentInitialPayment_lbl" xml:lang="en-US" id="id_2692546_1075352_1_1">Debt Instrument Initial Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentInitialPayment_lbl" xml:lang="en-US" id="id_2692546_1075352_2_1">Term loan principal reduction</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentInitialPayment" xlink:to="omex_DebtInstrumentInitialPayment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:label="us-gaap_DebtInstrumentInterestRateIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_932038_1_1">Debt Instrument Interest Rate Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_932038_2_1">Basis spread on variable rate, points</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:to="us-gaap_DebtInstrumentInterestRateIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2692546_924352_1_1">Debt Instrument Interest Rate Stated Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2692546_924352_32_1">Interest rate, stated percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2692546_924352_2_1">Company's consolidated debt, interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2692546_924352_12_1">Convertible notes Interest rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateTerms" xlink:label="us-gaap_DebtInstrumentInterestRateTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xml:lang="en-US" id="id_2692546_931862_1_1">Debt Instrument Interest Rate Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xml:lang="en-US" id="id_2692546_931862_2_1">Debt instrument description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateTerms" xlink:to="us-gaap_DebtInstrumentInterestRateTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentIssuedFaceAmount" xlink:label="omex_DebtInstrumentIssuedFaceAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentIssuedFaceAmount_lbl" xml:lang="en-US" id="id_2692546_1224210_3_1">Debt instrument issued face amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentIssuedFaceAmount_lbl" xml:lang="en-US" id="id_2692546_1224210_1_1">Debt Instrument Issued Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentIssuedFaceAmount_lbl" xml:lang="en-US" id="id_2692546_1224210_2_1">Convertible notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentIssuedFaceAmount" xlink:to="omex_DebtInstrumentIssuedFaceAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US" id="id_2692546_924921_1_1">Debt Instrument [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US" id="id_2692546_924921_2_1">Debt Instrument [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentMaturitiesMonthYear" xlink:label="omex_DebtInstrumentMaturitiesMonthYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentMaturitiesMonthYear_lbl" xml:lang="en-US" id="id_2692546_1223054_3_1">Debt instrument maturities month year.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentMaturitiesMonthYear_lbl" xml:lang="en-US" id="id_2692546_1223054_1_1">Debt Instrument Maturities Month Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentMaturitiesMonthYear_lbl" xml:lang="en-US" id="id_2692546_1223054_2_1">Loan maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentMaturitiesMonthYear" xlink:to="omex_DebtInstrumentMaturitiesMonthYear_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_2692546_926342_1_1">Debt Instrument Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_2692546_926342_2_1">Convertible notes maturity date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="id_2692546_926342_12_1">Maturity date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentMaturityDateRangeStart1" xlink:label="us-gaap_DebtInstrumentMaturityDateRangeStart1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDateRangeStart1_lbl" xml:lang="en-US" id="id_2692546_928707_1_1">Debt Instrument Maturity Date Range Start 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDateRangeStart1_lbl" xml:lang="en-US" id="id_2692546_928707_2_1">Note repayment commencing date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDateRangeStart1" xlink:to="us-gaap_DebtInstrumentMaturityDateRangeStart1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" id="id_2692546_931220_1_1">Debt Instrument Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" id="id_2692546_931220_2_1">Debt Instrument, Name [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentOriginalPrincipalPayment" xlink:label="omex_DebtInstrumentOriginalPrincipalPayment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentOriginalPrincipalPayment_lbl" xml:lang="en-US" id="id_2692546_1094397_3_1">Debt instrument original principal payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentOriginalPrincipalPayment_lbl" xml:lang="en-US" id="id_2692546_1094397_1_1">Debt Instrument Original Principal Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentOriginalPrincipalPayment_lbl" xml:lang="en-US" id="id_2692546_1094397_2_1">Original principal installments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentOriginalPrincipalPayment" xlink:to="omex_DebtInstrumentOriginalPrincipalPayment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentPeriodicPayment" xlink:label="us-gaap_DebtInstrumentPeriodicPayment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xml:lang="en-US" id="id_2692546_940231_1_1">Debt Instrument Periodic Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xml:lang="en-US" id="id_2692546_940231_2_1">Periodic payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPayment" xlink:to="us-gaap_DebtInstrumentPeriodicPayment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xml:lang="en-US" id="id_2692546_939372_1_1">Debt Instrument Periodic Payment Principal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xml:lang="en-US" id="id_2692546_939372_2_1">Periodic payments, principal</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:to="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentPrincipalAmountRedeemed" xlink:label="omex_DebtInstrumentPrincipalAmountRedeemed"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentPrincipalAmountRedeemed_lbl" xml:lang="en-US" id="id_2692546_990683_3_1">Debt instrument principal amount redeemed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentPrincipalAmountRedeemed_lbl" xml:lang="en-US" id="id_2692546_990683_1_1">Debt Instrument Principal Amount Redeemed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentPrincipalAmountRedeemed_lbl" xml:lang="en-US" id="id_2692546_990683_2_1">Principal amount outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentPrincipalAmountRedeemed" xlink:to="omex_DebtInstrumentPrincipalAmountRedeemed_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DebtInstrumentPrincipalPayments" xlink:label="omex_DebtInstrumentPrincipalPayments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentPrincipalPayments_lbl" xml:lang="en-US" id="id_2692546_1079276_3_1">Debt instrument principal payments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentPrincipalPayments_lbl" xml:lang="en-US" id="id_2692546_1079276_1_1">Debt Instrument Principal Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentPrincipalPayments_lbl" xml:lang="en-US" id="id_2692546_1079276_2_1">Principal payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentPrincipalPayments" xlink:to="omex_DebtInstrumentPrincipalPayments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:label="us-gaap_DebtInstrumentRepurchasedFaceAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentRepurchasedFaceAmount_lbl" xml:lang="en-US" id="id_2692546_939029_1_1">Debt Instrument Repurchased Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentRepurchasedFaceAmount_lbl" xml:lang="en-US" id="id_2692546_939029_2_1">Original principal amount of repurchased note</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRepurchasedFaceAmount" xlink:to="us-gaap_DebtInstrumentRepurchasedFaceAmount_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentRevisedMaturityDate_lbl" xml:lang="en-US" id="id_2692546_1121903_3_1">Debt instrument revised maturity date.</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccountsReceivable" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccountsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccountsReceivable_lbl" xml:lang="en-US" id="id_2692546_1054391_3_1">Deferred tax assets tax deferred expense reserves and accruals accounts receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccountsReceivable_lbl" xml:lang="en-US" id="id_2692546_1054391_1_1">Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accounts Receivable</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedExpenses" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedExpenses_lbl" xml:lang="en-US" id="id_2692546_1018860_3_1">Deferred tax assets tax deferred expense reserves and accruals accrued expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedExpenses_lbl" xml:lang="en-US" id="id_2692546_1018860_1_1">Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedExpenses_lbl" xml:lang="en-US" id="id_2692546_1018860_2_1">Accrued expenses</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory_lbl" xml:lang="en-US" id="id_2692546_1137325_3_1">Deferred tax assets tax deferred expense reserves and accruals inventory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory_lbl" xml:lang="en-US" id="id_2692546_1137325_1_1">Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Inventory</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross" xlink:label="us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross_lbl" xml:lang="en-US" id="id_2692546_939467_1_1">Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross_lbl" xml:lang="en-US" id="id_2692546_939467_2_1">Excess of book over tax depreciation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross" xlink:to="us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US" id="id_2692546_934093_1_1">Deferred Tax Assets Valuation Allowance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US" id="id_2692546_934093_2_1">Valuation allowance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US" id="id_2692546_934093_14_1">Less: valuation allowance</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="us-gaap_DeferredTaxLiabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xml:lang="en-US" id="id_2692546_935540_1_1">Deferred Tax Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xml:lang="en-US" id="id_2692546_935540_6_1">Deferred tax liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilities_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_lbl" xml:lang="en-US" id="id_2692546_934090_1_1">Deferred Tax Liabilities Prepaid Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses_lbl" xml:lang="en-US" id="id_2692546_934090_2_1">Prepaid expenses</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2692546_935287_1_1">Deferred Tax Liabilities Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2692546_935287_2_1">Property and equipment basis</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:to="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DepositInsuranceCoveragePerDeposit" xlink:label="omex_DepositInsuranceCoveragePerDeposit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DepositInsuranceCoveragePerDeposit_lbl" xml:lang="en-US" id="id_2692546_977902_3_1">Deposit insurance coverage per deposit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DepositInsuranceCoveragePerDeposit_lbl" xml:lang="en-US" id="id_2692546_977902_1_1">Deposit Insurance Coverage Per Deposit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DepositInsuranceCoveragePerDeposit_lbl" xml:lang="en-US" id="id_2692546_977902_2_1">Insurance amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DepositInsuranceCoveragePerDeposit" xlink:to="omex_DepositInsuranceCoveragePerDeposit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Depreciation_lbl" xml:lang="en-US" id="id_2692546_940263_1_1">Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Depreciation_lbl" xml:lang="en-US" id="id_2692546_940263_2_1">Depreciation and amortization</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DerivativeContractSettlementDescription" xlink:label="omex_DerivativeContractSettlementDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeContractSettlementDescription_lbl" xml:lang="en-US" id="id_2692546_1224240_3_1">Derivative contract settlement description.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeContractSettlementDescription_lbl" xml:lang="en-US" id="id_2692546_1224240_1_1">Derivative Contract Settlement Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeContractSettlementDescription_lbl" xml:lang="en-US" id="id_2692546_1224240_2_1">Weight of troy ounce difference multiplied description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DerivativeContractSettlementDescription" xlink:to="omex_DerivativeContractSettlementDescription_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="us-gaap_DerivativeContractTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xml:lang="en-US" id="id_2692546_928318_1_1">Derivative Contract Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xml:lang="en-US" id="id_2692546_928318_2_1">Derivative Contract [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_DerivativeContractTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate_lbl" xml:lang="en-US" id="id_2692546_957566_3_1">Derivative financial instruments fair value assumptions contractual conversion rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate_lbl" xml:lang="en-US" id="id_2692546_957566_1_1">Derivative Financial Instruments Fair Value Assumptions Contractual Conversion Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate_lbl" xml:lang="en-US" id="id_2692546_957566_2_1">Contractual conversion rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate" xlink:to="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualConversionRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate_lbl" xml:lang="en-US" id="id_2692546_1104998_3_1">Derivative financial instruments fair value assumptions contractual exercise rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate_lbl" xml:lang="en-US" id="id_2692546_1104998_1_1">Derivative Financial Instruments Fair Value Assumptions Contractual Exercise Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate_lbl" xml:lang="en-US" id="id_2692546_1104998_2_1">Contractual exercise rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate" xlink:to="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualExerciseRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualInterestRate" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualInterestRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualInterestRate_lbl" xml:lang="en-US" id="id_2692546_1065460_3_1">Derivative financial instruments fair value assumptions contractual interest rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualInterestRate_lbl" xml:lang="en-US" id="id_2692546_1065460_1_1">Derivative Financial Instruments Fair Value Assumptions Contractual Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsContractualInterestRate_lbl" xml:lang="en-US" id="id_2692546_1065460_2_1">Contractual interest rate</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DerivativeFinancialInstrumentsFairValueAssumptionsCreditRiskAdjustedYieldRateRangeOfRates" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsCreditRiskAdjustedYieldRateRangeOfRates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsCreditRiskAdjustedYieldRateRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_972792_3_1">Derivative financial instruments fair value assumptions credit risk adjusted yield rate range of rates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsCreditRiskAdjustedYieldRateRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_972792_1_1">Derivative Financial Instruments Fair Value Assumptions Credit Risk Adjusted Yield Rate Range Of Rates</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_1054586_1_1">Derivative Financial Instruments Fair Value Assumptions Market Risk Adjusted Rate Range Of Rates</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsQuotedMarketPrice_lbl" xml:lang="en-US" id="id_2692546_1099183_3_1">Derivative financial instruments fair value assumptions quoted market price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsQuotedMarketPrice_lbl" xml:lang="en-US" id="id_2692546_1099183_1_1">Derivative Financial Instruments Fair Value Assumptions Quoted Market Price</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsTermInYears_lbl" xml:lang="en-US" id="id_2692546_962311_3_1">Derivative financial instruments fair value assumptions term in years.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsTermInYears_lbl" xml:lang="en-US" id="id_2692546_962311_1_1">Derivative Financial Instruments Fair Value Assumptions Term In Years</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity_lbl" xml:lang="en-US" id="id_2692546_1131545_3_1">Derivative financial instruments fair value contractual term to maturity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity_lbl" xml:lang="en-US" id="id_2692546_1131545_1_1">Derivative Financial Instruments Fair Value Contractual Term To Maturity</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xml:lang="en-US" id="id_2692546_933959_1_1">Derivative Gain Loss On Derivative Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xml:lang="en-US" id="id_2692546_933959_2_1">Derivative income (expense)</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeIncomeExpenseNet_lbl" xml:lang="en-US" id="id_2692546_1018607_3_1">Derivative income expense net.</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="us-gaap_DerivativeInstrumentRiskAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xml:lang="en-US" id="id_2692546_929665_1_1">Derivative Instrument Risk [Axis]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeTable_lbl" xml:lang="en-US" id="id_2692546_930138_1_1">Derivative [Table]</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DistributionRatioOfRemainingNetProceed" xlink:label="omex_DistributionRatioOfRemainingNetProceed"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DistributionRatioOfRemainingNetProceed_lbl" xml:lang="en-US" id="id_2692546_1224120_3_1">Distribution ratio of remaining net proceed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DistributionRatioOfRemainingNetProceed_lbl" xml:lang="en-US" id="id_2692546_1224120_1_1">Distribution Ratio Of Remaining Net Proceed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DistributionRatioOfRemainingNetProceed_lbl" xml:lang="en-US" id="id_2692546_1224120_2_1">Ratio of remaining net proceed</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DividendsReceivedFromSubsidiary" xlink:label="omex_DividendsReceivedFromSubsidiary"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DividendsReceivedFromSubsidiary_lbl" xml:lang="en-US" id="id_2692546_1011747_3_1">Dividends received from subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DividendsReceivedFromSubsidiary_lbl" xml:lang="en-US" id="id_2692546_1011747_1_1">Dividends Received From Subsidiary</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DocumentAndEntityInformationAbstract" xlink:label="omex_DocumentAndEntityInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_2692546_951207_3_1">Document and entity information.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_2692546_951207_1_1">Document And Entity Information [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_2692546_922019_1_1">Document Fiscal Period Focus</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_2692546_922019_2_1">Document Fiscal Period Focus</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_DoradoOceanResourcesLimitedMember" xlink:label="omex_DoradoOceanResourcesLimitedMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DoradoOceanResourcesLimitedMember_lbl" xml:lang="en-US" id="id_2692546_1137485_3_1">Dorado ocean resources limited.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DoradoOceanResourcesLimitedMember_lbl" xml:lang="en-US" id="id_2692546_1137485_1_1">Dorado Ocean Resources Limited [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DoradoOceanResourcesLimitedMember_lbl" xml:lang="en-US" id="id_2692546_1137485_2_1">Dorado Ocean Resources, Ltd. [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DoradoOceanResourcesLimitedMember" xlink:to="omex_DoradoOceanResourcesLimitedMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="us-gaap_EarningsPerShareAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xml:lang="en-US" id="id_2692546_929815_1_1">Earnings Per Share [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xml:lang="en-US" id="id_2692546_929815_2_1">NET INCOME (LOSS) PER SHARE</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_2692546_925621_1_1">Earnings Per Share Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_2692546_925621_2_1">Net income (loss) per share - basic</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xml:lang="en-US" id="id_2692546_929231_1_1">Earnings Per Share Basic And Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xml:lang="en-US" id="id_2692546_929231_2_1">Basic and diluted (See NOTE B)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAndDiluted" xlink:to="us-gaap_EarningsPerShareBasicAndDiluted_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_2692546_924397_1_1">Earnings Per Share Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_2692546_924397_2_1">Net income (loss) per share - diluted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_931897_1_1">Earnings Per Share Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_931897_2_1">Earnings Per Share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount" xlink:label="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount_lbl" xml:lang="en-US" id="id_2692546_1224141_3_1">Effective income tax rate reconciliation alternate minimum tax credit amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount_lbl" xml:lang="en-US" id="id_2692546_1224141_1_1">Effective Income Tax Rate Reconciliation Alternate Minimum Tax Credit Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount_lbl" xml:lang="en-US" id="id_2692546_1224141_14_1">Change in AMT credit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount" xlink:to="omex_EffectiveIncomeTaxRateReconciliationAlternateMinimumTaxCreditAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US" id="id_2692546_925166_1_1">Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US" id="id_2692546_925166_2_1">Federal income tax rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EligibleEmployeeThresholdPercentage" xlink:label="omex_EligibleEmployeeThresholdPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EligibleEmployeeThresholdPercentage_lbl" xml:lang="en-US" id="id_2692546_1074418_3_1">Eligible employee threshold percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EligibleEmployeeThresholdPercentage_lbl" xml:lang="en-US" id="id_2692546_1074418_1_1">Eligible Employee Threshold Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EligibleEmployeeThresholdPercentage_lbl" xml:lang="en-US" id="id_2692546_1074418_2_1">Eligible employee threshold percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EligibleEmployeeThresholdPercentage" xlink:to="omex_EligibleEmployeeThresholdPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember" xlink:label="us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_lbl" xml:lang="en-US" id="id_2692546_933016_1_1">Embedded Derivative Financial Instruments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_lbl" xml:lang="en-US" id="id_2692546_933016_2_1">Compound Embedded Derivative [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmbeddedDerivativeFinancialInstrumentsMember" xlink:to="us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="us-gaap_EmployeeStockOptionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" id="id_2692546_924898_1_1">Employee Stock Option [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" id="id_2692546_924898_2_1">Employee Stock Incentive Plan [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EmployeeStockOptionsExercisePrice" xlink:label="omex_EmployeeStockOptionsExercisePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EmployeeStockOptionsExercisePrice_lbl" xml:lang="en-US" id="id_2692546_1058663_3_1">Employee stock options exercise price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EmployeeStockOptionsExercisePrice_lbl" xml:lang="en-US" id="id_2692546_1058663_1_1">Employee Stock Options Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EmployeeStockOptionsExercisePrice_lbl" xml:lang="en-US" id="id_2692546_1058663_2_1">Stock options exercise price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EmployeeStockOptionsExercisePrice" xlink:to="omex_EmployeeStockOptionsExercisePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US" id="id_2692546_921997_1_1">Entity Central Index Key</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US" id="id_2692546_921997_2_1">Entity Central Index Key</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_922042_1_1">Entity Common Stock Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_922042_2_1">Entity Common Stock, Shares Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US" id="id_2692546_921970_1_1">Entity [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US" id="id_2692546_921970_2_1">Entity [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US" id="id_2692546_921955_1_1">Entity Filer Category</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US" id="id_2692546_921955_2_1">Entity Filer Category</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US" id="id_2692546_921937_1_1">Entity Registrant Name</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US" id="id_2692546_921937_2_1">Entity Registrant Name</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityAbstract" xlink:label="us-gaap_EquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityAbstract_lbl" xml:lang="en-US" id="id_2692546_932367_1_1">Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityAbstract_lbl" xml:lang="en-US" id="id_2692546_932367_2_1">Equity [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_EquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xml:lang="en-US" id="id_2692546_928688_1_1">Equity Method Investment Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xml:lang="en-US" id="id_2692546_928688_2_1">Ownership percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:to="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="us-gaap_EquityMethodInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestments_lbl" xml:lang="en-US" id="id_2692546_938854_1_1">Equity Method Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestments_lbl" xml:lang="en-US" id="id_2692546_938854_2_1">Book value of investment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestments" xlink:to="us-gaap_EquityMethodInvestments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xml:lang="en-US" id="id_2692546_926504_1_1">Equity Method Investments And Joint Ventures [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xml:lang="en-US" id="id_2692546_926504_2_1">Equity Method Investments and Joint Ventures [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:to="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_927889_1_1">Equity Method Investments Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_927889_2_1">Investments in Unconsolidated Entities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:to="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure" xlink:label="us-gaap_EquityMethodInvestmentsFairValueDisclosure"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentsFairValueDisclosure_lbl" xml:lang="en-US" id="id_2692546_937386_1_1">Equity Method Investments Fair Value Disclosure</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentsFairValueDisclosure_lbl" xml:lang="en-US" id="id_2692546_937386_2_1">Fair value of investment</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EquityMethodInvestmentsNumberOfMembershipUnit" xlink:label="omex_EquityMethodInvestmentsNumberOfMembershipUnit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EquityMethodInvestmentsNumberOfMembershipUnit_lbl" xml:lang="en-US" id="id_2692546_1166751_3_1">Equity method investments number of membership unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EquityMethodInvestmentsNumberOfMembershipUnit_lbl" xml:lang="en-US" id="id_2692546_1166751_1_1">Equity Method Investments Number Of Membership Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EquityMethodInvestmentsNumberOfMembershipUnit_lbl" xml:lang="en-US" id="id_2692546_1166751_2_1">Number of membership units</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EquityMethodInvestmentsNumberOfMembershipUnit" xlink:to="omex_EquityMethodInvestmentsNumberOfMembershipUnit_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EquityMethodInvestmentsSharesAcquired" xlink:label="omex_EquityMethodInvestmentsSharesAcquired"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EquityMethodInvestmentsSharesAcquired_lbl" xml:lang="en-US" id="id_2692546_949422_3_1">Equity method investments shares acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EquityMethodInvestmentsSharesAcquired_lbl" xml:lang="en-US" id="id_2692546_949422_1_1">Equity Method Investments Shares Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EquityMethodInvestmentsSharesAcquired_lbl" xml:lang="en-US" id="id_2692546_949422_2_1">Acquisition of additional shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EquityMethodInvestmentsSharesAcquired" xlink:to="omex_EquityMethodInvestmentsSharesAcquired_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EquityMethodInvestmentsSharesExchangeRatio" xlink:label="omex_EquityMethodInvestmentsSharesExchangeRatio"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EquityMethodInvestmentsSharesExchangeRatio_lbl" xml:lang="en-US" id="id_2692546_1013844_3_1">Equity method investments shares exchange ratio.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EquityMethodInvestmentsSharesExchangeRatio_lbl" xml:lang="en-US" id="id_2692546_1013844_1_1">Equity Method Investments Shares Exchange Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EquityMethodInvestmentsSharesExchangeRatio_lbl" xml:lang="en-US" id="id_2692546_1013844_2_1">Shares issued per each share exchanged</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EquityMethodInvestmentsSharesExchangeRatio" xlink:to="omex_EquityMethodInvestmentsSharesExchangeRatio_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_EquityMethodInvestmentsSharesOwned" xlink:label="omex_EquityMethodInvestmentsSharesOwned"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EquityMethodInvestmentsSharesOwned_lbl" xml:lang="en-US" id="id_2692546_1059445_3_1">Equity method investments shares owned.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EquityMethodInvestmentsSharesOwned_lbl" xml:lang="en-US" id="id_2692546_1059445_1_1">Equity Method Investments Shares Owned</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EquityMethodInvestmentsSharesOwned_lbl" xml:lang="en-US" id="id_2692546_1059445_2_1">Shares owned</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EquityMethodInvestmentsSharesOwned" xlink:to="omex_EquityMethodInvestmentsSharesOwned_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ExhibitRevenue" xlink:label="omex_ExhibitRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ExhibitRevenue_lbl" xml:lang="en-US" id="id_2692546_977233_3_1">Attraction related revenues derived from the rental of our exhibit to museums and science centers and admission and merchandise revenue from the rental of the exhibit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ExhibitRevenue_lbl" xml:lang="en-US" id="id_2692546_977233_1_1">Exhibit Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ExhibitRevenue_lbl" xml:lang="en-US" id="id_2692546_977233_2_1">Exhibit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ExhibitRevenue" xlink:to="omex_ExhibitRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ExpeditionCharterRevenue" xlink:label="omex_ExpeditionCharterRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ExpeditionCharterRevenue_lbl" xml:lang="en-US" id="id_2692546_963613_3_1">Revenue derived from chartering vessels to customers for deep-sea exploration and recovery operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ExpeditionCharterRevenue_lbl" xml:lang="en-US" id="id_2692546_963613_1_1">Expedition Charter Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ExpeditionCharterRevenue_lbl" xml:lang="en-US" id="id_2692546_963613_2_1">Expedition</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ExpeditionCharterRevenue" xlink:to="omex_ExpeditionCharterRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ExtinguishmentLossMember" xlink:label="omex_ExtinguishmentLossMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ExtinguishmentLossMember_lbl" xml:lang="en-US" id="id_2692546_1010292_3_1">Extinguishment loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ExtinguishmentLossMember_lbl" xml:lang="en-US" id="id_2692546_1010292_1_1">Extinguishment Loss [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ExtinguishmentLossMember_lbl" xml:lang="en-US" id="id_2692546_1010292_2_1">Extinguishment Loss [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ExtinguishmentLossMember" xlink:to="omex_ExtinguishmentLossMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ExtinguishmentOfDebtAxis" xlink:label="us-gaap_ExtinguishmentOfDebtAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ExtinguishmentOfDebtAxis_lbl" xml:lang="en-US" id="id_2692546_931680_1_1">Extinguishment Of Debt [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ExtinguishmentOfDebtAxis_lbl" xml:lang="en-US" id="id_2692546_931680_2_1">Extinguishment of Debt [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExtinguishmentOfDebtAxis" xlink:to="us-gaap_ExtinguishmentOfDebtAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ExtinguishmentOfDebtTypeDomain" xlink:label="us-gaap_ExtinguishmentOfDebtTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ExtinguishmentOfDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_930772_1_1">Extinguishment Of Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ExtinguishmentOfDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_930772_2_1">Extinguishment of Debt, Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExtinguishmentOfDebtTypeDomain" xlink:to="us-gaap_ExtinguishmentOfDebtTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsExpectedTerm" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm_lbl" xml:lang="en-US" id="id_2692546_923769_1_1">Fair Value Assumptions Expected Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm_lbl" xml:lang="en-US" id="id_2692546_923769_2_1">Implied expected term to maturity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExpectedTerm" xlink:to="us-gaap_FairValueAssumptionsExpectedTerm_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_924771_1_1">Fair Value Assumptions Expected Volatility Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_924771_2_1">Range of market volatilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_924771_12_1">Range of volatilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2692546_928541_1_1">Fair Value Assumptions Risk Free Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2692546_928541_2_1">Risk-free rates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate" xlink:label="us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_927186_1_1">Fair Value Assumptions Weighted Average Volatility Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_927186_2_1">Range of equivalent volatilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate" xlink:to="us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FairValueAssumptionVolatilityRangeAbstract" xlink:label="omex_FairValueAssumptionVolatilityRangeAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FairValueAssumptionVolatilityRangeAbstract_lbl" xml:lang="en-US" id="id_2692546_1049158_3_1">Fair value assumption volatility range.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FairValueAssumptionVolatilityRangeAbstract_lbl" xml:lang="en-US" id="id_2692546_1049158_1_1">Fair Value Assumption Volatility Range [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FairValueAssumptionVolatilityRangeAbstract_lbl" xml:lang="en-US" id="id_2692546_1049158_2_1">Market volatility:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FairValueAssumptionVolatilityRangeAbstract" xlink:to="omex_FairValueAssumptionVolatilityRangeAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US" id="id_2692546_929790_1_1">Fair Value By Fair Value Hierarchy Level [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US" id="id_2692546_929790_2_1">Fair Value, Hierarchy [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" id="id_2692546_925736_1_1">Fair Value Inputs Level 1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" id="id_2692546_925736_2_1">Level 1 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" id="id_2692546_925851_1_1">Fair Value Inputs Level 2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" id="id_2692546_925851_2_1">Level 2 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US" id="id_2692546_929831_1_1">Fair Value Inputs Level 3 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US" id="id_2692546_929831_2_1">Level 3 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xml:lang="en-US" id="id_2692546_927992_1_1">Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xml:lang="en-US" id="id_2692546_927992_2_1">Changes in Fair Value Inputs and Assumptions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_2692546_930398_1_1">Fair Value Measurements Fair Value Hierarchy [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_2692546_930398_2_1">Fair Value Hierarchy [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xml:lang="en-US" id="id_2692546_936507_1_1">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xml:lang="en-US" id="id_2692546_936507_2_1">Expirations from redemptions of host contracts reflected in income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" id="id_2692546_934288_1_1">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_931594_1_1">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Period Increase Decrease</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2692546_931594_2_1">Changes in fair value inputs and assumptions reflected in income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xml:lang="en-US" id="id_2692546_934561_1_1">Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xml:lang="en-US" id="id_2692546_934561_4_1">Ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xml:lang="en-US" id="id_2692546_934561_5_1">Beginning balance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US" id="id_2692546_931938_1_1">Fair Value Of Financial Instruments Policy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US" id="id_2692546_931938_2_1">Fair Value of Financial Instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd_lbl" xml:lang="en-US" id="id_2692546_1116405_3_1">Federal operating loss carryforwards expiration period end.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd_lbl" xml:lang="en-US" id="id_2692546_1116405_1_1">Federal Operating Loss Carryforwards Expiration Period End</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd_lbl" xml:lang="en-US" id="id_2692546_1116405_2_1">Net operating loss carryforwards expiration year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd" xlink:to="omex_FederalOperatingLossCarryforwardsExpirationPeriodEnd_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FederalOperatingLossCarryforwardsExpirationPeriodStart" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart_lbl" xml:lang="en-US" id="id_2692546_1024957_3_1">Federal operating loss carryforwards expiration period start.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart_lbl" xml:lang="en-US" id="id_2692546_1024957_1_1">Federal Operating Loss Carryforwards Expiration Period Start</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart_lbl" xml:lang="en-US" id="id_2692546_1024957_2_1">Net operating loss carryforwards expiration year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart" xlink:to="omex_FederalOperatingLossCarryforwardsExpirationPeriodStart_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FirstMortgageMember" xlink:label="us-gaap_FirstMortgageMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FirstMortgageMember_lbl" xml:lang="en-US" id="id_2692546_925762_1_1">First Mortgage [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FirstMortgageMember_lbl" xml:lang="en-US" id="id_2692546_925762_2_1">First Mortgage [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FirstMortgageMember" xlink:to="us-gaap_FirstMortgageMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FixedPriceSwapFirstContractMember" xlink:label="omex_FixedPriceSwapFirstContractMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FixedPriceSwapFirstContractMember_lbl" xml:lang="en-US" id="id_2692546_1224238_3_1">Fixed price swap first contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FixedPriceSwapFirstContractMember_lbl" xml:lang="en-US" id="id_2692546_1224238_1_1">Fixed Price Swap First Contract [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FixedPriceSwapFirstContractMember_lbl" xml:lang="en-US" id="id_2692546_1224238_2_1">Fixed Price Swap First Contract [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FixedPriceSwapFirstContractMember" xlink:to="omex_FixedPriceSwapFirstContractMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FixedPriceSwapMember" xlink:label="omex_FixedPriceSwapMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FixedPriceSwapMember_lbl" xml:lang="en-US" id="id_2692546_1181873_3_1">Fixed price swap hedge.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FixedPriceSwapMember_lbl" xml:lang="en-US" id="id_2692546_1181873_1_1">Fixed Price Swap [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FixedPriceSwapMember_lbl" xml:lang="en-US" id="id_2692546_1181873_2_1">Fixed Price Swap Hedge [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FixedPriceSwapMember" xlink:to="omex_FixedPriceSwapMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_FixedPriceSwapSecondContractMember" xlink:label="omex_FixedPriceSwapSecondContractMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FixedPriceSwapSecondContractMember_lbl" xml:lang="en-US" id="id_2692546_1224239_3_1">Fixed price swap second contract.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FixedPriceSwapSecondContractMember_lbl" xml:lang="en-US" id="id_2692546_1224239_1_1">Fixed Price Swap Second Contract [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FixedPriceSwapSecondContractMember_lbl" xml:lang="en-US" id="id_2692546_1224239_2_1">Fixed Price Swap Second Contract [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FixedPriceSwapSecondContractMember" xlink:to="omex_FixedPriceSwapSecondContractMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FixturesAndEquipmentGross" xlink:label="us-gaap_FixturesAndEquipmentGross"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FixturesAndEquipmentGross_lbl" xml:lang="en-US" id="id_2692546_937298_1_1">Fixtures And Equipment Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FixturesAndEquipmentGross_lbl" xml:lang="en-US" id="id_2692546_937298_2_1">Equipment and office fixtures</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FixturesAndEquipmentGross" xlink:to="us-gaap_FixturesAndEquipmentGross_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainContingenciesLineItems" xlink:label="us-gaap_GainContingenciesLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainContingenciesLineItems_lbl" xml:lang="en-US" id="id_2692546_928395_1_1">Gain Contingencies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainContingenciesLineItems_lbl" xml:lang="en-US" id="id_2692546_928395_2_1">Gain Contingencies [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainContingenciesLineItems" xlink:to="us-gaap_GainContingenciesLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainContingenciesTable" xlink:label="us-gaap_GainContingenciesTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainContingenciesTable_lbl" xml:lang="en-US" id="id_2692546_930248_1_1">Gain Contingencies [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainContingenciesTable_lbl" xml:lang="en-US" id="id_2692546_930248_2_1">Gain Contingencies [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainContingenciesTable" xlink:to="us-gaap_GainContingenciesTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainOnDerivativeInstrumentsPretax" xlink:label="us-gaap_GainOnDerivativeInstrumentsPretax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainOnDerivativeInstrumentsPretax_lbl" xml:lang="en-US" id="id_2692546_935038_1_1">Gain On Derivative Instruments Pretax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainOnDerivativeInstrumentsPretax_lbl" xml:lang="en-US" id="id_2692546_935038_2_1">Change in derivative liabilities fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainOnDerivativeInstrumentsPretax_lbl" xml:lang="en-US" id="id_2692546_935038_14_1">Change in derivatives liabilities fair value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainOnDerivativeInstrumentsPretax" xlink:to="us-gaap_GainOnDerivativeInstrumentsPretax_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_GairsoppaMember" xlink:label="omex_GairsoppaMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_GairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_1024830_3_1">Gairsoppa.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_GairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_1024830_1_1">Gairsoppa [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_GairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_1024830_2_1">Gairsoppa [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_GairsoppaMember" xlink:to="omex_GairsoppaMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_GaltResourcesLlcHmsVictoryMember" xlink:label="omex_GaltResourcesLlcHmsVictoryMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_GaltResourcesLlcHmsVictoryMember_lbl" xml:lang="en-US" id="id_2692546_952231_3_1">Galt resources, LLC (HMS victory).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_GaltResourcesLlcHmsVictoryMember_lbl" xml:lang="en-US" id="id_2692546_952231_1_1">Galt Resources Llc Hms Victory [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_GaltResourcesLlcHmsVictoryMember_lbl" xml:lang="en-US" id="id_2692546_952231_2_1">Galt Resources, LLC (HMS Victory) [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_GaltResourcesLlcHmsVictoryMember" xlink:to="omex_GaltResourcesLlcHmsVictoryMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_GaltResourcesLlcMember" xlink:label="omex_GaltResourcesLlcMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_GaltResourcesLlcMember_lbl" xml:lang="en-US" id="id_2692546_1144458_3_1">Galt resources LLC.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_GaltResourcesLlcMember_lbl" xml:lang="en-US" id="id_2692546_1144458_1_1">Galt Resources Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_GaltResourcesLlcMember_lbl" xml:lang="en-US" id="id_2692546_1144458_2_1">Galt Resources, LLC [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_GaltResourcesLlcMember" xlink:to="omex_GaltResourcesLlcMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_HmsVictoryProjectMember" xlink:label="omex_HmsVictoryProjectMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_HmsVictoryProjectMember_lbl" xml:lang="en-US" id="id_2692546_1096022_3_1">HMS victory project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_HmsVictoryProjectMember_lbl" xml:lang="en-US" id="id_2692546_1096022_1_1">Hms Victory Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_HmsVictoryProjectMember_lbl" xml:lang="en-US" id="id_2692546_1096022_2_1">HMS Victory Project [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_HmsVictoryProjectMember" xlink:to="omex_HmsVictoryProjectMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_931752_1_1">Impairment Or Disposal Of Long Lived Assets Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_931752_2_1">Long-Lived Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:to="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US" id="id_2692546_935434_1_1">Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxesTable_lbl" xml:lang="en-US" id="id_2692546_1100017_1_1">Income Taxes [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IncomeTaxesTable_lbl" xml:lang="en-US" id="id_2692546_1100017_2_1">Income Taxes [Table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="id_2692546_940829_6_1">Income tax provision</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationChangeInApportionmentEstimate_lbl" xml:lang="en-US" id="id_2692546_1103492_3_1">Income tax reconciliation change in apportionment estimate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationChangeInApportionmentEstimate_lbl" xml:lang="en-US" id="id_2692546_1103492_1_1">Income Tax Reconciliation Change In Apportionment Estimate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IncomeTaxReconciliationChangeInApportionmentEstimate_lbl" xml:lang="en-US" id="id_2692546_1103492_2_1">Change in apportionment estimate</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncomeTaxReconciliationChangeInCapitalLossCarryoverEstimate" xlink:label="omex_IncomeTaxReconciliationChangeInCapitalLossCarryoverEstimate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationChangeInCapitalLossCarryoverEstimate_lbl" xml:lang="en-US" id="id_2692546_941746_3_1">Income tax reconciliation change in capital loss carryover estimate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationChangeInCapitalLossCarryoverEstimate_lbl" xml:lang="en-US" id="id_2692546_941746_1_1">Income Tax Reconciliation Change In Capital Loss Carryover Estimate</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncomeTaxReconciliationChangeInNetOperatingLossEstimate" xlink:label="omex_IncomeTaxReconciliationChangeInNetOperatingLossEstimate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationChangeInNetOperatingLossEstimate_lbl" xml:lang="en-US" id="id_2692546_1085485_3_1">Income tax reconciliation change in net operating loss estimate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationChangeInNetOperatingLossEstimate_lbl" xml:lang="en-US" id="id_2692546_1085485_1_1">Income Tax Reconciliation Change In Net Operating Loss Estimate</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncomeTaxReconciliationDeductionsDerivatives" xlink:label="omex_IncomeTaxReconciliationDeductionsDerivatives"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationDeductionsDerivatives_lbl" xml:lang="en-US" id="id_2692546_987466_3_1">Income tax reconciliation deductions derivatives.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationDeductionsDerivatives_lbl" xml:lang="en-US" id="id_2692546_987466_1_1">Income Tax Reconciliation Deductions Derivatives</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncomeTaxReconciliationDeductionsStockOptions" xlink:label="omex_IncomeTaxReconciliationDeductionsStockOptions"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationDeductionsStockOptions_lbl" xml:lang="en-US" id="id_2692546_983357_3_1">Income tax reconciliation deductions stock options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationDeductionsStockOptions_lbl" xml:lang="en-US" id="id_2692546_983357_1_1">Income Tax Reconciliation Deductions Stock Options</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncomeTaxReconciliationGainLossOnSaleOfSubsidiaryStock" xlink:label="omex_IncomeTaxReconciliationGainLossOnSaleOfSubsidiaryStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncomeTaxReconciliationGainLossOnSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1185041_3_1">Income tax reconciliation gain loss on sale of subsidiary stock.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtAlternativeMinimumTaxRate_lbl" xml:lang="en-US" id="id_2692546_1059348_1_1">Income Tax Reconciliation Income Tax Expense Benefit At Alternative Minimum Tax Rate</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xml:lang="en-US" id="id_2692546_939032_2_1">Expected (benefit)</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl" xml:lang="en-US" id="id_2692546_939530_2_1">Nondeductible expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xml:lang="en-US" id="id_2692546_940800_1_1">Income Tax Reconciliation Other Adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xml:lang="en-US" id="id_2692546_940800_2_1">Other, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:to="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract_lbl" xml:lang="en-US" id="id_2692546_924253_1_1">Income Tax Reconciliation Other Reconciling Items [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract_lbl" xml:lang="en-US" id="id_2692546_924253_2_1">Effects of:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract" xlink:to="us-gaap_IncomeTaxReconciliationOtherReconcilingItemsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xml:lang="en-US" id="id_2692546_938982_1_1">Income Tax Reconciliation State And Local Income Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xml:lang="en-US" id="id_2692546_938982_2_1">State income taxes net of federal benefits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_2692546_938987_1_1">Increase Decrease In Accounts Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_2692546_938987_2_1">Accounts payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US" id="id_2692546_935454_1_1">Increase Decrease In Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US" id="id_2692546_935454_14_1">Accounts receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" id="id_2692546_938916_1_1">Increase Decrease In Accrued Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" id="id_2692546_938916_2_1">Accrued expenses and other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl" xml:lang="en-US" id="id_2692546_938117_1_1">Increase Decrease In Deferred Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl" xml:lang="en-US" id="id_2692546_938117_2_1">Deferred revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:to="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl" xml:lang="en-US" id="id_2692546_940674_1_1">Increase Decrease In Interest Payable Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl" xml:lang="en-US" id="id_2692546_940674_2_1">Note payable interest accretion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:to="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xml:lang="en-US" id="id_2692546_935750_1_1">Increase Decrease In Inventories</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xml:lang="en-US" id="id_2692546_935750_14_1">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xml:lang="en-US" id="id_2692546_927387_1_1">Increase Decrease In Operating Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xml:lang="en-US" id="id_2692546_927387_2_1">(Increase) decrease in:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_928917_1_1">Increase Decrease In Operating Liabilities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_928917_2_1">Increase (decrease) in:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US" id="id_2692546_934505_1_1">Increase Decrease In Other Operating Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US" id="id_2692546_934505_14_1">Other assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US" id="id_2692546_936588_1_1">Increase Decrease In Restricted Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US" id="id_2692546_936588_14_1">Restricted cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInRestrictedCash" xlink:to="us-gaap_IncreaseDecreaseInRestrictedCash_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IncrementalPercentageOfOriginalValue" xlink:label="omex_IncrementalPercentageOfOriginalValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IncrementalPercentageOfOriginalValue_lbl" xml:lang="en-US" id="id_2692546_1116525_3_1">Incremental percentage of original value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IncrementalPercentageOfOriginalValue_lbl" xml:lang="en-US" id="id_2692546_1116525_1_1">Incremental Percentage Of Original Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IncrementalPercentageOfOriginalValue_lbl" xml:lang="en-US" id="id_2692546_1116525_2_1">Incremental percentage of original value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_IncrementalPercentageOfOriginalValue" xlink:to="omex_IncrementalPercentageOfOriginalValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IndebtednessInterestRatePerYear" xlink:label="omex_IndebtednessInterestRatePerYear"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IndebtednessInterestRatePerYear_lbl" xml:lang="en-US" id="id_2692546_956397_3_1">Indebtedness interest rate per year.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IndebtednessInterestRatePerYear_lbl" xml:lang="en-US" id="id_2692546_956397_1_1">Indebtedness Interest Rate Per Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IndebtednessInterestRatePerYear_lbl" xml:lang="en-US" id="id_2692546_956397_2_1">Indebtedness interest rate per year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_IndebtednessInterestRatePerYear" xlink:to="omex_IndebtednessInterestRatePerYear_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IndebtednessInterestRatePerYearUnderDefaultCondition" xlink:label="omex_IndebtednessInterestRatePerYearUnderDefaultCondition"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IndebtednessInterestRatePerYearUnderDefaultCondition_lbl" xml:lang="en-US" id="id_2692546_1099184_3_1">Indebtedness interest rate per year under default condition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IndebtednessInterestRatePerYearUnderDefaultCondition_lbl" xml:lang="en-US" id="id_2692546_1099184_1_1">Indebtedness Interest Rate Per Year Under Default Condition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IndebtednessInterestRatePerYearUnderDefaultCondition_lbl" xml:lang="en-US" id="id_2692546_1099184_2_1">Indebtedness interest rate per year under default condition</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_IndebtednessInterestRatePerYearUnderDefaultCondition" xlink:to="omex_IndebtednessInterestRatePerYearUnderDefaultCondition_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InMoneyPotentialCommonSharesMember" xlink:label="omex_InMoneyPotentialCommonSharesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1065034_3_1">In money potential common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1065034_1_1">In Money Potential Common Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1065034_2_1">In Money Potential Common Shares [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InMoneyPotentialCommonSharesMember" xlink:to="omex_InMoneyPotentialCommonSharesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_2692546_938923_1_1">Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_2692546_938923_14_1">Interest expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="us-gaap_InterestExpenseDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseDebt_lbl" xml:lang="en-US" id="id_2692546_940678_1_1">Interest Expense Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestExpenseDebt_lbl" xml:lang="en-US" id="id_2692546_940678_2_1">Interest expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseDebt" xlink:to="us-gaap_InterestExpenseDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InterestObligationFromBasisPointVariation" xlink:label="omex_InterestObligationFromBasisPointVariation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InterestObligationFromBasisPointVariation_lbl" xml:lang="en-US" id="id_2692546_1136128_3_1">Interest obligation from basis point variation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InterestObligationFromBasisPointVariation_lbl" xml:lang="en-US" id="id_2692546_1136128_1_1">Interest Obligation From Basis Point Variation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InterestObligationFromBasisPointVariation_lbl" xml:lang="en-US" id="id_2692546_1136128_2_1">Interest obligation from basis points variation, per month</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InterestObligationFromBasisPointVariation" xlink:to="omex_InterestObligationFromBasisPointVariation_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestPaid" xlink:label="us-gaap_InterestPaid"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US" id="id_2692546_935259_1_1">Interest Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US" id="id_2692546_935259_2_1">Interest paid</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaid" xlink:to="us-gaap_InterestPaid_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InventoryCurrentAndNonCurrentNet" xlink:label="omex_InventoryCurrentAndNonCurrentNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InventoryCurrentAndNonCurrentNet_lbl" xml:lang="en-US" id="id_2692546_1143074_3_1">Inventory current and noncurrent net.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InventoryCurrentAndNonCurrentNet_lbl" xml:lang="en-US" id="id_2692546_1143074_1_1">Inventory Current And Non Current Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="omex_InventoryCurrentAndNonCurrentNet_lbl" xml:lang="en-US" id="id_2692546_1143074_6_1">Total inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InventoryCurrentAndNonCurrentNet" xlink:to="omex_InventoryCurrentAndNonCurrentNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="us-gaap_InventoryDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_929099_1_1">Inventory Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_929099_2_1">Inventory Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryDisclosureAbstract" xlink:to="us-gaap_InventoryDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="us-gaap_InventoryDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926989_1_1">Inventory Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926989_2_1">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryDisclosureTextBlock" xlink:to="us-gaap_InventoryDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_2692546_938714_1_1">Inventory Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_2692546_938714_2_1">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryNoncurrent" xlink:label="us-gaap_InventoryNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryNoncurrent_lbl" xml:lang="en-US" id="id_2692546_938971_1_1">Inventory Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryNoncurrent_lbl" xml:lang="en-US" id="id_2692546_938971_2_1">Inventory</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InventoryNoncurrent_lbl" xml:lang="en-US" id="id_2692546_938971_12_1">Inventory non-current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNoncurrent" xlink:to="us-gaap_InventoryNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="us-gaap_InventoryPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928546_1_1">Inventory Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928546_2_1">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryPolicyTextBlock" xlink:to="us-gaap_InventoryPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryValuationReserves" xlink:label="us-gaap_InventoryValuationReserves"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryValuationReserves_lbl" xml:lang="en-US" id="id_2692546_935813_1_1">Inventory Valuation Reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InventoryValuationReserves_lbl" xml:lang="en-US" id="id_2692546_935813_14_1">Merchandise reserve</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryValuationReserves" xlink:to="us-gaap_InventoryValuationReserves_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentForFutureRevenueRights" xlink:label="omex_InvestmentForFutureRevenueRights"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentForFutureRevenueRights_lbl" xml:lang="en-US" id="id_2692546_1024293_3_1">Investment for future revenue rights.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentForFutureRevenueRights_lbl" xml:lang="en-US" id="id_2692546_1024293_1_1">Investment For Future Revenue Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentForFutureRevenueRights_lbl" xml:lang="en-US" id="id_2692546_1024293_2_1">Investment for future revenue rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentForFutureRevenueRights" xlink:to="omex_InvestmentForFutureRevenueRights_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentIncomeNonoperating" xlink:label="us-gaap_InvestmentIncomeNonoperating"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentIncomeNonoperating_lbl" xml:lang="en-US" id="id_2692546_936181_1_1">Investment Income Nonoperating</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentIncomeNonoperating_lbl" xml:lang="en-US" id="id_2692546_936181_2_1">Interest income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeNonoperating" xlink:to="us-gaap_InvestmentIncomeNonoperating_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentInConsolidatedEntity" xlink:label="omex_InvestmentInConsolidatedEntity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentInConsolidatedEntity_lbl" xml:lang="en-US" id="id_2692546_1042449_3_1">Investment in consolidated entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentInConsolidatedEntity_lbl" xml:lang="en-US" id="id_2692546_1042449_1_1">Investment In Consolidated Entity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentInConsolidatedEntity_lbl" xml:lang="en-US" id="id_2692546_1042449_2_1">Investment in consolidated entity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentInConsolidatedEntity" xlink:to="omex_InvestmentInConsolidatedEntity_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentInWhollyOwnedSubsidiary" xlink:label="omex_InvestmentInWhollyOwnedSubsidiary"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentInWhollyOwnedSubsidiary_lbl" xml:lang="en-US" id="id_2692546_1064550_3_1">Investment in wholly owned subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentInWhollyOwnedSubsidiary_lbl" xml:lang="en-US" id="id_2692546_1064550_1_1">Investment In Wholly Owned Subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentInWhollyOwnedSubsidiary_lbl" xml:lang="en-US" id="id_2692546_1064550_2_1">Oceanica Resources investments held by subsidiary</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentInWhollyOwnedSubsidiary" xlink:to="omex_InvestmentInWhollyOwnedSubsidiary_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentMultiplierInCaseOfProjectSuccess" xlink:label="omex_InvestmentMultiplierInCaseOfProjectSuccess"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentMultiplierInCaseOfProjectSuccess_lbl" xml:lang="en-US" id="id_2692546_1216686_3_1">Investment multiplier in case of project success.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentMultiplierInCaseOfProjectSuccess_lbl" xml:lang="en-US" id="id_2692546_1216686_1_1">Investment Multiplier In Case Of Project Success</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentMultiplierInCaseOfProjectSuccess_lbl" xml:lang="en-US" id="id_2692546_1216686_2_1">Investment multiplier in case of project success</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentMultiplierInCaseOfProjectSuccess" xlink:to="omex_InvestmentMultiplierInCaseOfProjectSuccess_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentRepaymentPeriod" xlink:label="omex_InvestmentRepaymentPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentRepaymentPeriod_lbl" xml:lang="en-US" id="id_2692546_1038593_3_1">Investment repayment period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentRepaymentPeriod_lbl" xml:lang="en-US" id="id_2692546_1038593_1_1">Investment Repayment Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentRepaymentPeriod_lbl" xml:lang="en-US" id="id_2692546_1038593_2_1">Investment repayment period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentRepaymentPeriod" xlink:to="omex_InvestmentRepaymentPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock" xlink:label="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_991826_3_1">Investments debt and equity securities policy.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_991826_1_1">Investments Debt And Equity Securities Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_991826_2_1">Investments Debt and Equity Securities Policy</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock" xlink:to="omex_InvestmentsDebtAndEquitySecuritiesPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xml:lang="en-US" id="id_2692546_940860_1_1">Investments In Affiliates Subsidiaries Associates And Joint Ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xml:lang="en-US" id="id_2692546_940860_2_1">Investment at a carrying value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:to="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_IssuedWarrantsToAcquireCommonShares" xlink:label="omex_IssuedWarrantsToAcquireCommonShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_IssuedWarrantsToAcquireCommonShares_lbl" xml:lang="en-US" id="id_2692546_946944_3_1">Issued warrants to acquire common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_IssuedWarrantsToAcquireCommonShares_lbl" xml:lang="en-US" id="id_2692546_946944_1_1">Issued Warrants To Acquire Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_IssuedWarrantsToAcquireCommonShares_lbl" xml:lang="en-US" id="id_2692546_946944_2_1">Issued warrants to acquire common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_IssuedWarrantsToAcquireCommonShares" xlink:to="omex_IssuedWarrantsToAcquireCommonShares_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_2692546_921954_1_1">Legal Entity [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US" id="id_2692546_921954_2_1">Legal Entity [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_LenderMember" xlink:label="omex_LenderMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_LenderMember_lbl" xml:lang="en-US" id="id_2692546_1015988_3_1">Lender.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_LenderMember_lbl" xml:lang="en-US" id="id_2692546_1015988_1_1">Lender [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_LenderMember_lbl" xml:lang="en-US" id="id_2692546_1015988_2_1">Lender [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_LenderMember" xlink:to="omex_LenderMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_2692546_936129_1_1">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_2692546_936129_6_1">Total liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_2692546_935778_1_1">Liabilities And Stockholders Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_2692546_935778_6_1">Total liabilities and stockholders' deficit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2692546_924388_1_1">Liabilities And Stockholders Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2692546_924388_2_1">LIABILITIES AND STOCKHOLDERS' DEFICIT</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2692546_934201_1_1">Liabilities Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2692546_934201_6_1">Total current liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_2692546_929787_1_1">Liabilities Current [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_2692546_929787_2_1">CURRENT LIABILITIES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="us-gaap_LiabilitiesNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2692546_936225_1_1">Liabilities Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2692546_936225_6_1">Total long-term liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrent" xlink:to="us-gaap_LiabilitiesNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US" id="id_2692546_931290_1_1">Liabilities Noncurrent [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US" id="id_2692546_931290_2_1">LONG-TERM LIABILITIES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateDescription" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDescription"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDescription_lbl" xml:lang="en-US" id="id_2692546_927156_1_1">Line Of Credit Facility Interest Rate Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDescription_lbl" xml:lang="en-US" id="id_2692546_927156_2_1">Interest rate description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityInterestRateDescription" xlink:to="us-gaap_LineOfCreditFacilityInterestRateDescription_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LitigationSettlementAmount" xlink:label="us-gaap_LitigationSettlementAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LitigationSettlementAmount_lbl" xml:lang="en-US" id="id_2692546_936210_1_1">Litigation Settlement Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LitigationSettlementAmount_lbl" xml:lang="en-US" id="id_2692546_936210_2_1">Fees and costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationSettlementAmount" xlink:to="us-gaap_LitigationSettlementAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoanProcessingFee" xlink:label="us-gaap_LoanProcessingFee"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoanProcessingFee_lbl" xml:lang="en-US" id="id_2692546_938217_1_1">Loan Processing Fee</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoanProcessingFee_lbl" xml:lang="en-US" id="id_2692546_938217_2_1">Loan origination fee paid at closing</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoanProcessingFee" xlink:to="us-gaap_LoanProcessingFee_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926116_1_1">Loans Notes Trade And Other Receivables Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_926116_2_1">Accounts Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock" xlink:to="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="us-gaap_LoansPayableMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansPayableMember_lbl" xml:lang="en-US" id="id_2692546_923514_1_1">Loans Payable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoansPayableMember_lbl" xml:lang="en-US" id="id_2692546_923514_2_1">Term Loan [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayableMember" xlink:to="us-gaap_LoansPayableMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_2692546_936046_1_1">Long Term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_2692546_936046_2_1">Company's consolidated debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US" id="id_2692546_936046_12_1">Project term loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2692546_931308_1_1">Longterm Debt Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2692546_931308_2_1">Long-Term Debt, Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_925976_1_1">Longterm Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_925976_2_1">Long-term Debt, Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MarineServiceAccountReceivables" xlink:label="omex_MarineServiceAccountReceivables"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MarineServiceAccountReceivables_lbl" xml:lang="en-US" id="id_2692546_993268_3_1">Marine service account receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MarineServiceAccountReceivables_lbl" xml:lang="en-US" id="id_2692546_993268_1_1">Marine Service Account Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MarineServiceAccountReceivables_lbl" xml:lang="en-US" id="id_2692546_993268_2_1">Marine service account receivables</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MarineServiceAccountReceivables" xlink:to="omex_MarineServiceAccountReceivables_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MarineServicesObligationsDeferredRevenue" xlink:label="omex_MarineServicesObligationsDeferredRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MarineServicesObligationsDeferredRevenue_lbl" xml:lang="en-US" id="id_2692546_991127_3_1">Marine services obligations deferred revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MarineServicesObligationsDeferredRevenue_lbl" xml:lang="en-US" id="id_2692546_991127_1_1">Marine Services Obligations Deferred Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MarineServicesObligationsDeferredRevenue_lbl" xml:lang="en-US" id="id_2692546_991127_2_1">Marine services obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MarineServicesObligationsDeferredRevenue" xlink:to="omex_MarineServicesObligationsDeferredRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MarketingGeneralAndAdministrativeExpenses" xlink:label="omex_MarketingGeneralAndAdministrativeExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MarketingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" id="id_2692546_1080260_3_1">Marketing general and administrative expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MarketingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" id="id_2692546_1080260_1_1">Marketing General And Administrative Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MarketingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" id="id_2692546_1080260_2_1">Marketing, general and administrative Related To project</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MarketingGeneralAndAdministrativeExpenses" xlink:to="omex_MarketingGeneralAndAdministrativeExpenses_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MaturityPeriodOfConcentrationOfCreditRisk" xlink:label="omex_MaturityPeriodOfConcentrationOfCreditRisk"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MaturityPeriodOfConcentrationOfCreditRisk_lbl" xml:lang="en-US" id="id_2692546_1002970_3_1">Maturity period of concentration of credit risk.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MaturityPeriodOfConcentrationOfCreditRisk_lbl" xml:lang="en-US" id="id_2692546_1002970_1_1">Maturity Period Of Concentration Of Credit Risk</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MaturityPeriodOfConcentrationOfCreditRisk_lbl" xml:lang="en-US" id="id_2692546_1002970_2_1">Credit risk maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MaturityPeriodOfConcentrationOfCreditRisk" xlink:to="omex_MaturityPeriodOfConcentrationOfCreditRisk_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MaximumIssueOfWarrantsToPurchaseCommonStock" xlink:label="omex_MaximumIssueOfWarrantsToPurchaseCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MaximumIssueOfWarrantsToPurchaseCommonStock_lbl" xml:lang="en-US" id="id_2692546_1048176_3_1">Maximum issue of warrants to purchase common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MaximumIssueOfWarrantsToPurchaseCommonStock_lbl" xml:lang="en-US" id="id_2692546_1048176_1_1">Maximum Issue Of Warrants To Purchase Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MaximumIssueOfWarrantsToPurchaseCommonStock_lbl" xml:lang="en-US" id="id_2692546_1048176_2_1">Warrant issued to purchase common stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MaximumIssueOfWarrantsToPurchaseCommonStock" xlink:to="omex_MaximumIssueOfWarrantsToPurchaseCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MaximumLoanToValuePercentage" xlink:label="omex_MaximumLoanToValuePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MaximumLoanToValuePercentage_lbl" xml:lang="en-US" id="id_2692546_1041102_3_1">Maximum loan to value percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MaximumLoanToValuePercentage_lbl" xml:lang="en-US" id="id_2692546_1041102_1_1">Maximum Loan To Value Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MaximumLoanToValuePercentage_lbl" xml:lang="en-US" id="id_2692546_1041102_2_1">Loan-to-value, percent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MaximumLoanToValuePercentage" xlink:to="omex_MaximumLoanToValuePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_2692546_923140_1_1">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_2692546_923140_2_1">Maximum [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis" xlink:label="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis_lbl" xml:lang="en-US" id="id_2692546_1166754_3_1">Maximum percentage of cash flow effect on present value basis.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis_lbl" xml:lang="en-US" id="id_2692546_1166754_1_1">Maximum Percentage Of Cash Flow Effect On Present Value Basis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis_lbl" xml:lang="en-US" id="id_2692546_1166754_2_1">Maximum percentage of cash flow effect on present value basis</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis" xlink:to="omex_MaximumPercentageOfCashFlowEffectOnPresentValueBasis_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MaximumVotingRightPercentage" xlink:label="omex_MaximumVotingRightPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MaximumVotingRightPercentage_lbl" xml:lang="en-US" id="id_2692546_1007303_3_1">Maximum voting right percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MaximumVotingRightPercentage_lbl" xml:lang="en-US" id="id_2692546_1007303_1_1">Maximum Voting Right Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MaximumVotingRightPercentage_lbl" xml:lang="en-US" id="id_2692546_1007303_2_1">Maximum voting right percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MaximumVotingRightPercentage" xlink:to="omex_MaximumVotingRightPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MineralExplorationArea" xlink:label="omex_MineralExplorationArea"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MineralExplorationArea_lbl" xml:lang="en-US" id="id_2692546_951470_3_1">Mineral exploration area.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MineralExplorationArea_lbl" xml:lang="en-US" id="id_2692546_951470_1_1">Mineral Exploration Area</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MineralExplorationArea_lbl" xml:lang="en-US" id="id_2692546_951470_2_1">Mineral exploration area</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MineralExplorationArea" xlink:to="omex_MineralExplorationArea_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MinimumAmountOfAttorneyFeesClaimFiled" xlink:label="omex_MinimumAmountOfAttorneyFeesClaimFiled"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MinimumAmountOfAttorneyFeesClaimFiled_lbl" xml:lang="en-US" id="id_2692546_1224224_3_1">Minimum amount of attorney fees claim filed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MinimumAmountOfAttorneyFeesClaimFiled_lbl" xml:lang="en-US" id="id_2692546_1224224_1_1">Minimum Amount Of Attorney Fees Claim Filed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MinimumAmountOfAttorneyFeesClaimFiled_lbl" xml:lang="en-US" id="id_2692546_1224224_2_1">Excess of claim</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MinimumAmountOfAttorneyFeesClaimFiled" xlink:to="omex_MinimumAmountOfAttorneyFeesClaimFiled_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MinimumExpectedMonetizeAmount" xlink:label="omex_MinimumExpectedMonetizeAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MinimumExpectedMonetizeAmount_lbl" xml:lang="en-US" id="id_2692546_1225997_3_1">Minimum expected monetize amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MinimumExpectedMonetizeAmount_lbl" xml:lang="en-US" id="id_2692546_1225997_1_1">Minimum Expected Monetize Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MinimumExpectedMonetizeAmount_lbl" xml:lang="en-US" id="id_2692546_1225997_2_1">Minimum expected monetize amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MinimumExpectedMonetizeAmount" xlink:to="omex_MinimumExpectedMonetizeAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_2692546_932953_1_1">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_2692546_932953_2_1">Minimum [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MiningExploratoryServiceRevenue" xlink:label="omex_MiningExploratoryServiceRevenue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MiningExploratoryServiceRevenue_lbl" xml:lang="en-US" id="id_2692546_1028525_3_1">Mining exploratory service revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MiningExploratoryServiceRevenue_lbl" xml:lang="en-US" id="id_2692546_1028525_1_1">Mining Exploratory Service Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MiningExploratoryServiceRevenue_lbl" xml:lang="en-US" id="id_2692546_1028525_2_1">Deep sea mining exploratory services</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MiningExploratoryServiceRevenue" xlink:to="omex_MiningExploratoryServiceRevenue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterest" xlink:label="us-gaap_MinorityInterest"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US" id="id_2692546_934962_1_1">Minority Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US" id="id_2692546_934962_2_1">Non-controlling interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterest" xlink:to="us-gaap_MinorityInterest_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl" xml:lang="en-US" id="id_2692546_925475_1_1">Minority Interest Ownership Percentage By Parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl" xml:lang="en-US" id="id_2692546_925475_2_1">Equity stake in CRP</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:to="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MonteCarloSimulationsMember" xlink:label="omex_MonteCarloSimulationsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MonteCarloSimulationsMember_lbl" xml:lang="en-US" id="id_2692546_967029_3_1">Monte Carlo Simulations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MonteCarloSimulationsMember_lbl" xml:lang="en-US" id="id_2692546_967029_1_1">Monte Carlo Simulations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MonteCarloSimulationsMember_lbl" xml:lang="en-US" id="id_2692546_967029_2_1">Monte Carlo Simulations [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MonteCarloSimulationsMember" xlink:to="omex_MonteCarloSimulationsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MonthlyIncreaseOfRedemptionPrice" xlink:label="omex_MonthlyIncreaseOfRedemptionPrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MonthlyIncreaseOfRedemptionPrice_lbl" xml:lang="en-US" id="id_2692546_1112355_3_1">Monthly increase of redemption price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MonthlyIncreaseOfRedemptionPrice_lbl" xml:lang="en-US" id="id_2692546_1112355_1_1">Monthly Increase Of Redemption Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MonthlyIncreaseOfRedemptionPrice_lbl" xml:lang="en-US" id="id_2692546_1112355_2_1">Monthly increase of redemption price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MonthlyIncreaseOfRedemptionPrice" xlink:to="omex_MonthlyIncreaseOfRedemptionPrice_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MortgageAndLoansPayableCurrent" xlink:label="omex_MortgageAndLoansPayableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MortgageAndLoansPayableCurrent_lbl" xml:lang="en-US" id="id_2692546_992667_3_1">Mortgage and loans payable current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MortgageAndLoansPayableCurrent_lbl" xml:lang="en-US" id="id_2692546_992667_1_1">Mortgage And Loans Payable Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MortgageAndLoansPayableCurrent_lbl" xml:lang="en-US" id="id_2692546_992667_2_1">Mortgage and loans payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MortgageAndLoansPayableCurrent" xlink:to="omex_MortgageAndLoansPayableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MortgageAndLoansPayableCurrentAndNonCurrent" xlink:label="omex_MortgageAndLoansPayableCurrentAndNonCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MortgageAndLoansPayableCurrentAndNonCurrent_lbl" xml:lang="en-US" id="id_2692546_979126_3_1">Mortgage and loans payable current and non current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MortgageAndLoansPayableCurrentAndNonCurrent_lbl" xml:lang="en-US" id="id_2692546_979126_1_1">Mortgage And Loans Payable Current And Non Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MortgageAndLoansPayableCurrentAndNonCurrent_lbl" xml:lang="en-US" id="id_2692546_979126_2_1">Company's consolidated debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MortgageAndLoansPayableCurrentAndNonCurrent" xlink:to="omex_MortgageAndLoansPayableCurrentAndNonCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MortgageAndLoansPayableNonCurrent" xlink:label="omex_MortgageAndLoansPayableNonCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MortgageAndLoansPayableNonCurrent_lbl" xml:lang="en-US" id="id_2692546_1070013_3_1">Mortgage and loans payable, non-current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MortgageAndLoansPayableNonCurrent_lbl" xml:lang="en-US" id="id_2692546_1070013_1_1">Mortgage And Loans Payable Non Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MortgageAndLoansPayableNonCurrent_lbl" xml:lang="en-US" id="id_2692546_1070013_2_1">Mortgage and loans payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MortgageAndLoansPayableNonCurrent" xlink:to="omex_MortgageAndLoansPayableNonCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_MortgageAndLoansPayableTextBlock" xlink:label="omex_MortgageAndLoansPayableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MortgageAndLoansPayableTextBlock_lbl" xml:lang="en-US" id="id_2692546_1093417_3_1">A category that describes the group of loans for which information is presented. For example, first mortgage, second mortgage, line of credit, etc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MortgageAndLoansPayableTextBlock_lbl" xml:lang="en-US" id="id_2692546_1093417_1_1">Mortgage And Loans Payable [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MortgageAndLoansPayableTextBlock_lbl" xml:lang="en-US" id="id_2692546_1093417_2_1">Mortgage and Loans Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MortgageAndLoansPayableTextBlock" xlink:to="omex_MortgageAndLoansPayableTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:label="us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_lbl" xml:lang="en-US" id="id_2692546_932997_1_1">Mortgage Loans On Real Estate Description Loan Category [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_lbl" xml:lang="en-US" id="id_2692546_932997_2_1">Mortgage Loans on Real Estate, Description, Loan Category [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis" xlink:to="us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain" xlink:label="us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain_lbl" xml:lang="en-US" id="id_2692546_931569_1_1">Mortgage Loans On Real Estate Loan Category [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain_lbl" xml:lang="en-US" id="id_2692546_931569_2_1">Mortgage Loans on Real Estate, Loan Category [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain" xlink:to="us-gaap_MortgageLoansOnRealEstateLoanCategoryDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgagesMember" xlink:label="us-gaap_MortgagesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgagesMember_lbl" xml:lang="en-US" id="id_2692546_930693_1_1">Mortgages [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgagesMember_lbl" xml:lang="en-US" id="id_2692546_930693_2_1">Mortgage Payable [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgagesMember" xlink:to="us-gaap_MortgagesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NeptuneMineralsIncorporatedMember" xlink:label="omex_NeptuneMineralsIncorporatedMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NeptuneMineralsIncorporatedMember_lbl" xml:lang="en-US" id="id_2692546_1099185_3_1">Neptune minerals incorporated.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NeptuneMineralsIncorporatedMember_lbl" xml:lang="en-US" id="id_2692546_1099185_1_1">Neptune Minerals Incorporated [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NeptuneMineralsIncorporatedMember_lbl" xml:lang="en-US" id="id_2692546_1099185_2_1">Neptune Minerals, Inc. [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NeptuneMineralsIncorporatedMember" xlink:to="omex_NeptuneMineralsIncorporatedMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_937453_1_1">Net Cash Provided By Used In Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_937453_6_1">NET CASH PROVIDED BY FINANCING ACTIVITIES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_924600_1_1">Net Cash Provided By Used In Financing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_924600_2_1">CASH FLOWS FROM FINANCING ACTIVITIES:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_2692546_939292_1_1">Net Cash Provided By Used In Investing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_2692546_939292_6_1">NET CASH (USED) BY INVESTING ACTIVITIES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_924425_1_1">Net Cash Provided By Used In Investing Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_924425_2_1">CASH FLOWS FROM INVESTING ACTIVITIES:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_2692546_928832_1_1">Net Cash Provided By Used In Operating Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_2692546_928832_6_1">NET CASH (USED) BY OPERATING ACTIVITIES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_930909_1_1">Net Cash Provided By Used In Operating Activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2692546_930909_2_1">CASH FLOWS FROM OPERATING ACTIVITIES:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_2692546_935636_1_1">Net Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_2692546_935636_2_1">Net loss before non-controlling interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="id_2692546_935636_6_1">NET INCOME (LOSS) BEFORE NON-CONTROLLING INTEREST</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2692546_936827_1_1">Net Income Loss Attributable To Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2692546_936827_14_1">Non-controlling interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted" xlink:label="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted_lbl" xml:lang="en-US" id="id_2692546_1130330_3_1">Net income loss available to common stockholders basic and diluted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted_lbl" xml:lang="en-US" id="id_2692546_1130330_1_1">Net Income Loss Available To Common Stockholders Basic And Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted_lbl" xml:lang="en-US" id="id_2692546_1130330_6_1">Numerator, basic and diluted net income (loss) available to stockholders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted" xlink:to="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NinePercentageConvertibleSeniorNotePayableMember" xlink:label="omex_NinePercentageConvertibleSeniorNotePayableMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NinePercentageConvertibleSeniorNotePayableMember_lbl" xml:lang="en-US" id="id_2692546_1058424_3_1">Nine percentage convertible senior note payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NinePercentageConvertibleSeniorNotePayableMember_lbl" xml:lang="en-US" id="id_2692546_1058424_1_1">Nine Percentage Convertible Senior Note Payable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NinePercentageConvertibleSeniorNotePayableMember_lbl" xml:lang="en-US" id="id_2692546_1058424_2_1">Face Value $8,000,000, 9% Convertible Senior Note Payable [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NinePercentageConvertibleSeniorNotePayableMember" xlink:to="omex_NinePercentageConvertibleSeniorNotePayableMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems" xlink:label="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems_lbl" xml:lang="en-US" id="id_2692546_1061594_3_1">Noncancelable Obligations Future Minimum Payments Due [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems_lbl" xml:lang="en-US" id="id_2692546_1061594_1_1">Noncancelable Obligations Future Minimum Payments Due [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems_lbl" xml:lang="en-US" id="id_2692546_1061594_2_1">Noncancelable Obligations Future Minimum Payments Due [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems" xlink:to="omex_NoncancelableObligationsFutureMinimumPaymentsDueLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_2692546_927496_1_1">Nonoperating Income Expense [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_2692546_927496_2_1">OTHER INCOME (EXPENSE)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued" xlink:label="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued_lbl" xml:lang="en-US" id="id_2692546_994874_3_1">Number of accredited investors to whom common stock issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued_lbl" xml:lang="en-US" id="id_2692546_994874_1_1">Number Of Accredited Investors To Whom Common Stock Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued_lbl" xml:lang="en-US" id="id_2692546_994874_2_1">Number of accredited investors to whom common stock stock issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued" xlink:to="omex_NumberOfAccreditedInvestorsToWhomCommonStockIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfFinancialInstitutionsInWhichCashDeposited" xlink:label="omex_NumberOfFinancialInstitutionsInWhichCashDeposited"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfFinancialInstitutionsInWhichCashDeposited_lbl" xml:lang="en-US" id="id_2692546_1015272_3_1">Number of financial institutions in which cash deposited.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfFinancialInstitutionsInWhichCashDeposited_lbl" xml:lang="en-US" id="id_2692546_1015272_1_1">Number Of Financial Institutions In Which Cash Deposited</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfFinancialInstitutionsInWhichCashDeposited_lbl" xml:lang="en-US" id="id_2692546_1015272_2_1">Number of financial institution in which cash is maintain</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfFinancialInstitutionsInWhichCashDeposited" xlink:to="omex_NumberOfFinancialInstitutionsInWhichCashDeposited_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement" xlink:label="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement_lbl" xml:lang="en-US" id="id_2692546_1166756_3_1">Number of institutional investor under securities purchase agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement_lbl" xml:lang="en-US" id="id_2692546_1166756_1_1">Number Of Institutional Investor Under Securities Purchase Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement_lbl" xml:lang="en-US" id="id_2692546_1166756_2_1">Number of institutional investor under securities purchase agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement" xlink:to="omex_NumberOfInstitutionalInvestorUnderSecuritiesPurchaseAgreement_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants" xlink:label="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants_lbl" xml:lang="en-US" id="id_2692546_1185046_3_1">Number of preferred shareholders considered for separate agreement to issue warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants_lbl" xml:lang="en-US" id="id_2692546_1185046_1_1">Number Of Preferred Shareholders Considered For Separate Agreement To Issue Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants_lbl" xml:lang="en-US" id="id_2692546_1185046_2_1">Holders of Series G Preferred Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants" xlink:to="omex_NumberOfPreferredShareholdersConsideredForSeparateAgreementToIssueWarrants_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfProjectsAfterBifurcation" xlink:label="omex_NumberOfProjectsAfterBifurcation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfProjectsAfterBifurcation_lbl" xml:lang="en-US" id="id_2692546_1216687_3_1">Number of projects after bifurcation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfProjectsAfterBifurcation_lbl" xml:lang="en-US" id="id_2692546_1216687_1_1">Number Of Projects After Bifurcation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfProjectsAfterBifurcation_lbl" xml:lang="en-US" id="id_2692546_1216687_2_1">Number of project bifurcate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfProjectsAfterBifurcation" xlink:to="omex_NumberOfProjectsAfterBifurcation_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing" xlink:label="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing_lbl" xml:lang="en-US" id="id_2692546_1226019_3_1">Number of securities called by warrants or rights upon additional financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing_lbl" xml:lang="en-US" id="id_2692546_1226019_1_1">Number Of Securities Called By Warrants Or Rights Upon Additional Financing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing_lbl" xml:lang="en-US" id="id_2692546_1226019_2_1">Shares available for issuance upon exercise</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing" xlink:to="omex_NumberOfSecuritiesCalledByWarrantsOrRightsUponAdditionalFinancing_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfServiceContractsUnderServiceObligation" xlink:label="omex_NumberOfServiceContractsUnderServiceObligation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfServiceContractsUnderServiceObligation_lbl" xml:lang="en-US" id="id_2692546_1166757_3_1">Number of service contracts under service obligation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfServiceContractsUnderServiceObligation_lbl" xml:lang="en-US" id="id_2692546_1166757_1_1">Number Of Service Contracts Under Service Obligation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfServiceContractsUnderServiceObligation_lbl" xml:lang="en-US" id="id_2692546_1166757_2_1">Number of service contract with service obligation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfServiceContractsUnderServiceObligation" xlink:to="omex_NumberOfServiceContractsUnderServiceObligation_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfSharesRedeemed" xlink:label="omex_NumberOfSharesRedeemed"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfSharesRedeemed_lbl" xml:lang="en-US" id="id_2692546_1136277_3_1">Number of shares redeemed.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfSharesRedeemed_lbl" xml:lang="en-US" id="id_2692546_1136277_1_1">Number Of Shares Redeemed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfSharesRedeemed_lbl" xml:lang="en-US" id="id_2692546_1136277_2_1">Number of shares redeemed</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfSharesRedeemed" xlink:to="omex_NumberOfSharesRedeemed_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_NumberOfStockIncentivePlans" xlink:label="omex_NumberOfStockIncentivePlans"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfStockIncentivePlans_lbl" xml:lang="en-US" id="id_2692546_1123981_3_1">Number of stock incentive plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfStockIncentivePlans_lbl" xml:lang="en-US" id="id_2692546_1123981_1_1">Number Of Stock Incentive Plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfStockIncentivePlans_lbl" xml:lang="en-US" id="id_2692546_1123981_2_1">Number of stock incentive plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfStockIncentivePlans" xlink:to="omex_NumberOfStockIncentivePlans_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US" id="id_2692546_940683_1_1">Operating Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US" id="id_2692546_940683_6_1">Total operating expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" id="id_2692546_927909_1_1">Operating Expenses [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" id="id_2692546_927909_2_1">OPERATING EXPENSES</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_2692546_934856_1_1">Operating Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_2692546_934856_6_1">INCOME (LOSS) FROM OPERATIONS</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="us-gaap_OperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_2692546_939188_1_1">Operating Loss Carryforwards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_2692546_939188_2_1">Net operating loss carryforwards related to foreign income tax</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLossCarryforwards" xlink:to="us-gaap_OperatingLossCarryforwards_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsExpirationYearEndMember" xlink:label="omex_OperatingLossCarryforwardsExpirationYearEndMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsExpirationYearEndMember_lbl" xml:lang="en-US" id="id_2692546_993175_3_1">Operating loss carryforwards expiration year end.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsExpirationYearEndMember_lbl" xml:lang="en-US" id="id_2692546_993175_1_1">Operating Loss Carryforwards Expiration Year End [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsExpirationYearEndMember_lbl" xml:lang="en-US" id="id_2692546_993175_2_1">End [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsExpirationYearEndMember" xlink:to="omex_OperatingLossCarryforwardsExpirationYearEndMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsExpirationYearStartMember" xlink:label="omex_OperatingLossCarryforwardsExpirationYearStartMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsExpirationYearStartMember_lbl" xml:lang="en-US" id="id_2692546_1094398_3_1">Operating loss carryforwards expiration year start.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsExpirationYearStartMember_lbl" xml:lang="en-US" id="id_2692546_1094398_1_1">Operating Loss Carryforwards Expiration Year Start [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsExpirationYearStartMember_lbl" xml:lang="en-US" id="id_2692546_1094398_2_1">Start [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsExpirationYearStartMember" xlink:to="omex_OperatingLossCarryforwardsExpirationYearStartMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1131494_3_1">Operating loss carryforwards expiring two thousand and eighteen through two thousand and twenty two.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1131494_1_1">Operating Loss Carryforwards Expiring Two Thousand And Eighteen Through Two Thousand And Twenty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1131494_2_1">2018 Through 2022 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember" xlink:to="omex_OperatingLossCarryforwardsExpiringTwoThousandAndEighteenThroughTwoThousandAndTwentyTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1185897_3_1">Operating loss carryforwards expiring two thousand and twenty eight through two thousand and thirty two.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1185897_1_1">Operating Loss Carryforwards Expiring Two Thousand And Twenty Eight Through Two Thousand And Thirty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember_lbl" xml:lang="en-US" id="id_2692546_1185897_2_1">2028 Through 2032 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember" xlink:to="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtyTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember_lbl" xml:lang="en-US" id="id_2692546_1185896_3_1">Operating loss carryforwards expiring two thousand and twenty three through two thousand and twenty seven.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember_lbl" xml:lang="en-US" id="id_2692546_1185896_1_1">Operating Loss Carryforwards Expiring Two Thousand And Twenty Three Through Two Thousand And Twenty Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember_lbl" xml:lang="en-US" id="id_2692546_1185896_2_1">2023 Through 2027 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember" xlink:to="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyThreeThroughTwoThousandAndTwentySevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperatingLossCarryforwardsUtilizedAmount" xlink:label="omex_OperatingLossCarryforwardsUtilizedAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperatingLossCarryforwardsUtilizedAmount_lbl" xml:lang="en-US" id="id_2692546_1028191_3_1">Operating loss carryforwards utilized amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperatingLossCarryforwardsUtilizedAmount_lbl" xml:lang="en-US" id="id_2692546_1028191_1_1">Operating Loss Carryforwards Utilized Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperatingLossCarryforwardsUtilizedAmount_lbl" xml:lang="en-US" id="id_2692546_1028191_2_1">Net operating loss carryforwards utilized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperatingLossCarryforwardsUtilizedAmount" xlink:to="omex_OperatingLossCarryforwardsUtilizedAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OperationsAndResearch" xlink:label="omex_OperationsAndResearch"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OperationsAndResearch_lbl" xml:lang="en-US" id="id_2692546_1054392_3_1">The aggregate costs incurred (1) for the marine operating costs such as vessel and related equipment operations and maintenance, crew and technical labor, fuel, provisions and supplies, port fees and depreciation, costs related to operating and supporting the attraction exhibit and (2) in a planned search or critical investigation aimed at discovery of new or additional knowledge with the belief that such knowledge will be useful in assisting in the location of targeted sites.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OperationsAndResearch_lbl" xml:lang="en-US" id="id_2692546_1054392_1_1">Operations And Research</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OperationsAndResearch_lbl" xml:lang="en-US" id="id_2692546_1054392_2_1">Operations and research</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OperationsAndResearch" xlink:to="omex_OperationsAndResearch_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OptionToPurchaseCommonSharesOutstanding" xlink:label="omex_OptionToPurchaseCommonSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OptionToPurchaseCommonSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_1107455_3_1">Option to purchase common shares outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OptionToPurchaseCommonSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_1107455_1_1">Option To Purchase Common Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OptionToPurchaseCommonSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_1107455_2_1">Option to purchase outstanding shares of Oceanica Resources held by subsidiary</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OptionToPurchaseCommonSharesOutstanding" xlink:to="omex_OptionToPurchaseCommonSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_931858_1_1">Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_931858_2_1">Basis of Presentation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US" id="id_2692546_939846_1_1">Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US" id="id_2692546_939846_6_1">Total other assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="us-gaap_OtherAssetsCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xml:lang="en-US" id="id_2692546_939944_1_1">Other Assets Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xml:lang="en-US" id="id_2692546_939944_2_1">Other current assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_2692546_937594_1_1">Other Assets Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_2692546_937594_2_1">Other non-current assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xml:lang="en-US" id="id_2692546_934300_1_1">Other Nonoperating Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xml:lang="en-US" id="id_2692546_934300_2_1">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncome" xlink:to="us-gaap_OtherNonoperatingIncome_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2692546_934087_1_1">Other Nonoperating Income Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2692546_934087_6_1">Total other income (expense)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OutOfMoneyPotentialCommonSharesMember" xlink:label="omex_OutOfMoneyPotentialCommonSharesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OutOfMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1122053_3_1">Out of money potential common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OutOfMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1122053_1_1">Out Of Money Potential Common Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OutOfMoneyPotentialCommonSharesMember_lbl" xml:lang="en-US" id="id_2692546_1122053_2_1">Out of Money Potential Common Shares [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OutOfMoneyPotentialCommonSharesMember" xlink:to="omex_OutOfMoneyPotentialCommonSharesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_OutstandingPrincipalAmountMortgageLoan" xlink:label="omex_OutstandingPrincipalAmountMortgageLoan"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OutstandingPrincipalAmountMortgageLoan_lbl" xml:lang="en-US" id="id_2692546_957567_3_1">Outstanding principal amount mortgage loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OutstandingPrincipalAmountMortgageLoan_lbl" xml:lang="en-US" id="id_2692546_957567_1_1">Outstanding Principal Amount Mortgage Loan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OutstandingPrincipalAmountMortgageLoan_lbl" xml:lang="en-US" id="id_2692546_957567_2_1">Outstanding principal amount mortgage loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OutstandingPrincipalAmountMortgageLoan" xlink:to="omex_OutstandingPrincipalAmountMortgageLoan_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ParticipationRevenueRightsFirstPaymentMember" xlink:label="omex_ParticipationRevenueRightsFirstPaymentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ParticipationRevenueRightsFirstPaymentMember_lbl" xml:lang="en-US" id="id_2692546_975243_3_1">First payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ParticipationRevenueRightsFirstPaymentMember_lbl" xml:lang="en-US" id="id_2692546_975243_1_1">Participation Revenue Rights First Payment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ParticipationRevenueRightsFirstPaymentMember_lbl" xml:lang="en-US" id="id_2692546_975243_2_1">First Payment [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ParticipationRevenueRightsFirstPaymentMember" xlink:to="omex_ParticipationRevenueRightsFirstPaymentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ParticipationRevenueRightsSecondPaymentMember" xlink:label="omex_ParticipationRevenueRightsSecondPaymentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ParticipationRevenueRightsSecondPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1092396_3_1">Second payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ParticipationRevenueRightsSecondPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1092396_1_1">Participation Revenue Rights Second Payment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ParticipationRevenueRightsSecondPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1092396_2_1">Second Payment [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ParticipationRevenueRightsSecondPaymentMember" xlink:to="omex_ParticipationRevenueRightsSecondPaymentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ParticipationRevenueRightsThirdPaymentMember" xlink:label="omex_ParticipationRevenueRightsThirdPaymentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ParticipationRevenueRightsThirdPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1085910_3_1">Participation revenue rights third payment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ParticipationRevenueRightsThirdPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1085910_1_1">Participation Revenue Rights Third Payment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ParticipationRevenueRightsThirdPaymentMember_lbl" xml:lang="en-US" id="id_2692546_1085910_2_1">Third Payment [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ParticipationRevenueRightsThirdPaymentMember" xlink:to="omex_ParticipationRevenueRightsThirdPaymentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsForDerivativeInstrumentFinancingActivities" xlink:label="us-gaap_PaymentsForDerivativeInstrumentFinancingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForDerivativeInstrumentFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_935069_1_1">Payments For Derivative Instrument Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsForDerivativeInstrumentFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_935069_2_1">Cost of the investor paid</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForDerivativeInstrumentFinancingActivities" xlink:to="us-gaap_PaymentsForDerivativeInstrumentFinancingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xml:lang="en-US" id="id_2692546_934432_1_1">Payments Of Debt Issuance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xml:lang="en-US" id="id_2692546_934432_2_1">Deferred cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDebtIssuanceCosts" xlink:to="us-gaap_PaymentsOfDebtIssuanceCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_2692546_936737_1_1">Payments Of Dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="id_2692546_936737_14_1">Dividends</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDividends" xlink:to="us-gaap_PaymentsOfDividends_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US" id="id_2692546_933358_1_1">Payments Of Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US" id="id_2692546_933358_2_1">Direct financing cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfFinancingCosts" xlink:to="us-gaap_PaymentsOfFinancingCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfLoanCosts" xlink:label="us-gaap_PaymentsOfLoanCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfLoanCosts_lbl" xml:lang="en-US" id="id_2692546_933570_1_1">Payments Of Loan Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsOfLoanCosts_lbl" xml:lang="en-US" id="id_2692546_933570_2_1">Recorded expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfLoanCosts" xlink:to="us-gaap_PaymentsOfLoanCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xml:lang="en-US" id="id_2692546_935307_1_1">Payments Of Stock Issuance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xml:lang="en-US" id="id_2692546_935307_14_1">Broker commissions and fees on capital raises</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfStockIssuanceCosts" xlink:to="us-gaap_PaymentsOfStockIssuanceCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:label="us-gaap_PaymentsToAcquireEquityMethodInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireEquityMethodInvestments_lbl" xml:lang="en-US" id="id_2692546_933350_1_1">Payments To Acquire Equity Method Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireEquityMethodInvestments_lbl" xml:lang="en-US" id="id_2692546_933350_14_1">Investment in consolidated entity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireEquityMethodInvestments" xlink:to="us-gaap_PaymentsToAcquireEquityMethodInvestments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2692546_936514_1_1">Payments To Acquire Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2692546_936514_14_1">Purchase of property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfAccelerationPaymentOfRemainingFaceValue" xlink:label="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue_lbl" xml:lang="en-US" id="id_2692546_1099186_3_1">Percentage of acceleration payment of remaining face value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue_lbl" xml:lang="en-US" id="id_2692546_1099186_1_1">Percentage Of Acceleration Payment Of Remaining Face Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue_lbl" xml:lang="en-US" id="id_2692546_1099186_2_1">Acceleration payment of remaining face value, percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue" xlink:to="omex_PercentageOfAccelerationPaymentOfRemainingFaceValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders" xlink:label="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1145645_3_1">Percentage of additional net revenue owed to certificate holders.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1145645_1_1">Percentage Of Additional Net Revenue Owed To Certificate Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1145645_2_1">Percentage of additional net revenue owed to certificate holders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders" xlink:to="omex_PercentageOfAdditionalNetRevenueOwedToCertificateHolders_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices" xlink:label="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices_lbl" xml:lang="en-US" id="id_2692546_963934_3_1">Percentage of adjusted conversion price of quoted market prices.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices_lbl" xml:lang="en-US" id="id_2692546_963934_1_1">Percentage Of Adjusted Conversion Price Of Quoted Market Prices</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices_lbl" xml:lang="en-US" id="id_2692546_963934_2_1">Adjusted conversion price of quoted market prices, Percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices" xlink:to="omex_PercentageOfAdjustedConversionPriceOfQuotedMarketPrices_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption" xlink:label="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption_lbl" xml:lang="en-US" id="id_2692546_1166755_3_1">Percentage of carrying value of additional note to determine change in fair value of embedded conversion option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption_lbl" xml:lang="en-US" id="id_2692546_1166755_1_1">Percentage Of Carrying Value Of Additional Note To Determine Change In Fair Value Of Embedded Conversion Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption_lbl" xml:lang="en-US" id="id_2692546_1166755_2_1">Percentage of carrying value of additional note to determine change in fair value of embedded conversion option</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption" xlink:to="omex_PercentageOfCarryingValueOfAdditionalNoteToDetermineChangeInFairValueOfEmbeddedConversionOption_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice" xlink:label="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice_lbl" xml:lang="en-US" id="id_2692546_1106924_3_1">Percentage of conversion price equal to volume weighted average price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice_lbl" xml:lang="en-US" id="id_2692546_1106924_1_1">Percentage Of Conversion Price Equal To Volume Weighted Average Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice_lbl" xml:lang="en-US" id="id_2692546_1106924_2_1">Volume-weighted average price, percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice" xlink:to="omex_PercentageOfConversionPriceEqualToVolumeWeightedAveragePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock" xlink:label="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock_lbl" xml:lang="en-US" id="id_2692546_1024294_3_1">Percentage of debt instrument conversion price on market price of common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock_lbl" xml:lang="en-US" id="id_2692546_1024294_1_1">Percentage Of Debt Instrument Conversion Price On Market Price Of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock_lbl" xml:lang="en-US" id="id_2692546_1024294_2_1">Debt instrument conversion price, percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock" xlink:to="omex_PercentageOfDebtInstrumentConversionPriceOnMarketPriceOfCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfRevenueOwedToCertificateHolders" xlink:label="omex_PercentageOfRevenueOwedToCertificateHolders"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1031508_3_1">Percentage of revenue owed to certificate holders.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1031508_1_1">Percentage Of Revenue Owed To Certificate Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfRevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_1031508_2_1">Percentage of revenue owed to certificate holders</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfRevenueOwedToCertificateHolders" xlink:to="omex_PercentageOfRevenueOwedToCertificateHolders_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit" xlink:label="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit_lbl" xml:lang="en-US" id="id_2692546_1121217_3_1">Percentage of revenue owed to certificate holders per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit_lbl" xml:lang="en-US" id="id_2692546_1121217_1_1">Percentage Of Revenue Owed To Certificate Holders Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit_lbl" xml:lang="en-US" id="id_2692546_1121217_2_1">Percentage of revenue owed to certificate holder, per each million invested</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit" xlink:to="omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PercentageOfVariableInterest" xlink:label="omex_PercentageOfVariableInterest"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfVariableInterest_lbl" xml:lang="en-US" id="id_2692546_1011938_3_1">Percentage of variable interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfVariableInterest_lbl" xml:lang="en-US" id="id_2692546_1011938_1_1">Percentage Of Variable Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfVariableInterest_lbl" xml:lang="en-US" id="id_2692546_1011938_2_1">Percentage of variable interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfVariableInterest" xlink:to="omex_PercentageOfVariableInterest_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PeriodForAnniversaryOfInitialClosingDate" xlink:label="omex_PeriodForAnniversaryOfInitialClosingDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PeriodForAnniversaryOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_993176_3_1">Period for anniversary of initial closing date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PeriodForAnniversaryOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_993176_1_1">Period For Anniversary Of Initial Closing Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PeriodForAnniversaryOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_993176_2_1">Period for anniversary, initial closing date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PeriodForAnniversaryOfInitialClosingDate" xlink:to="omex_PeriodForAnniversaryOfInitialClosingDate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PeriodForRegistrationStatementOfInitialClosingDate" xlink:label="omex_PeriodForRegistrationStatementOfInitialClosingDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PeriodForRegistrationStatementOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_1059447_3_1">Period for registration statement of initial closing date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PeriodForRegistrationStatementOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_1059447_1_1">Period For Registration Statement Of Initial Closing Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PeriodForRegistrationStatementOfInitialClosingDate_lbl" xml:lang="en-US" id="id_2692546_1059447_2_1">Registration statement filing period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PeriodForRegistrationStatementOfInitialClosingDate" xlink:to="omex_PeriodForRegistrationStatementOfInitialClosingDate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PeriodForRegistrationStatementSubjectToReview" xlink:label="omex_PeriodForRegistrationStatementSubjectToReview"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PeriodForRegistrationStatementSubjectToReview_lbl" xml:lang="en-US" id="id_2692546_975244_3_1">Period for registration statement subject to review.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PeriodForRegistrationStatementSubjectToReview_lbl" xml:lang="en-US" id="id_2692546_975244_1_1">Period For Registration Statement Subject To Review</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PeriodForRegistrationStatementSubjectToReview_lbl" xml:lang="en-US" id="id_2692546_975244_2_1">Registration statement review period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PeriodForRegistrationStatementSubjectToReview" xlink:to="omex_PeriodForRegistrationStatementSubjectToReview_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PeriodForRegistrationStatementToBeDeclaredEffective" xlink:label="omex_PeriodForRegistrationStatementToBeDeclaredEffective"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PeriodForRegistrationStatementToBeDeclaredEffective_lbl" xml:lang="en-US" id="id_2692546_967170_3_1">Period for registration statement to be declared effective.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PeriodForRegistrationStatementToBeDeclaredEffective_lbl" xml:lang="en-US" id="id_2692546_967170_1_1">Period For Registration Statement To Be Declared Effective</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PeriodForRegistrationStatementToBeDeclaredEffective_lbl" xml:lang="en-US" id="id_2692546_967170_2_1">Period for registration statement to be effective</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PeriodForRegistrationStatementToBeDeclaredEffective" xlink:to="omex_PeriodForRegistrationStatementToBeDeclaredEffective_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PeriodForWarrantTerm" xlink:label="omex_PeriodForWarrantTerm"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PeriodForWarrantTerm_lbl" xml:lang="en-US" id="id_2692546_965857_3_1">Period for warrant term.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PeriodForWarrantTerm_lbl" xml:lang="en-US" id="id_2692546_965857_1_1">Period For Warrant Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PeriodForWarrantTerm_lbl" xml:lang="en-US" id="id_2692546_965857_2_1">Term of warrant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PeriodForWarrantTerm" xlink:to="omex_PeriodForWarrantTerm_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PreferredShareOfSeriesGConvertible" xlink:label="omex_PreferredShareOfSeriesGConvertible"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PreferredShareOfSeriesGConvertible_lbl" xml:lang="en-US" id="id_2692546_1079612_3_1">Preferred share of series g convertible.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PreferredShareOfSeriesGConvertible_lbl" xml:lang="en-US" id="id_2692546_1079612_1_1">Preferred Share Of Series G Convertible</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PreferredShareOfSeriesGConvertible_lbl" xml:lang="en-US" id="id_2692546_1079612_2_1">Convertible preferred stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PreferredShareOfSeriesGConvertible" xlink:to="omex_PreferredShareOfSeriesGConvertible_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockAmountOfPreferredDividendsInArrears" xlink:label="us-gaap_PreferredStockAmountOfPreferredDividendsInArrears"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockAmountOfPreferredDividendsInArrears_lbl" xml:lang="en-US" id="id_2692546_934814_1_1">Preferred Stock Amount Of Preferred Dividends In Arrears</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockAmountOfPreferredDividendsInArrears_lbl" xml:lang="en-US" id="id_2692546_934814_2_1">Preferred Stock, amount of preferred dividends in arrears</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockAmountOfPreferredDividendsInArrears" xlink:to="us-gaap_PreferredStockAmountOfPreferredDividendsInArrears_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="us-gaap_PreferredStockDividendRatePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US" id="id_2692546_925352_1_1">Preferred Stock Dividend Rate Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US" id="id_2692546_925352_2_1">Dividend rate percentage of preferred stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_932596_1_1">Preferred Stock Par Or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_932596_2_1">Preferred stock, par value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockRedemptionDate" xlink:label="us-gaap_PreferredStockRedemptionDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockRedemptionDate_lbl" xml:lang="en-US" id="id_2692546_925691_1_1">Preferred Stock Redemption Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockRedemptionDate_lbl" xml:lang="en-US" id="id_2692546_925691_2_1">Estimated period for redemption of preferred stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockRedemptionDate" xlink:to="us-gaap_PreferredStockRedemptionDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockRedemptionTerms" xlink:label="us-gaap_PreferredStockRedemptionTerms"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockRedemptionTerms_lbl" xml:lang="en-US" id="id_2692546_931281_1_1">Preferred Stock Redemption Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockRedemptionTerms_lbl" xml:lang="en-US" id="id_2692546_931281_2_1">Terms of redemption</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockRedemptionTerms" xlink:to="us-gaap_PreferredStockRedemptionTerms_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_929540_1_1">Preferred Stock Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_929540_2_1">Preferred stock, shares authorized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" id="id_2692546_932934_1_1">Preferred Stock Shares Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" id="id_2692546_932934_2_1">Preferred stock, shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_926142_1_1">Preferred Stock Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_926142_2_1">Preferred stock, shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_2692546_933055_1_1">Preferred Stock Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="id_2692546_933055_2_1">Preferred stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_PriorPeriodAccruedCompensationPaidByEquityInstruments" xlink:label="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments_lbl" xml:lang="en-US" id="id_2692546_1013912_3_1">Prior period accrued compensation paid by equity instruments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments_lbl" xml:lang="en-US" id="id_2692546_1013912_1_1">Prior Period Accrued Compensation Paid By Equity Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments_lbl" xml:lang="en-US" id="id_2692546_1013912_2_1">Accrued compensation paid by equity instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments" xlink:to="omex_PriorPeriodAccruedCompensationPaidByEquityInstruments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities" xlink:label="us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_938624_1_1">Proceeds From Derivative Instrument Financing Activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities_lbl" xml:lang="en-US" id="id_2692546_938624_2_1">Gross proceeds from derivative instrument</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities" xlink:to="us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2692546_938994_1_1">Proceeds From Issuance Of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2692546_938994_2_1">Proceeds from issuance of common stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xml:lang="en-US" id="id_2692546_939993_1_1">Proceeds From Issuance Of Long Term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xml:lang="en-US" id="id_2692546_939993_2_1">Proceeds from issuance of loan payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ProceedsFromSaleOfSubsidiaryStock" xlink:label="omex_ProceedsFromSaleOfSubsidiaryStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ProceedsFromSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1137550_3_1">Proceeds from sale of subsidiary stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ProceedsFromSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1137550_1_1">Proceeds From Sale Of Subsidiary Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ProceedsFromSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1137550_2_1">Proceeds from sale of subsidiary stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ProceedsFromSaleOfSubsidiaryStock" xlink:to="omex_ProceedsFromSaleOfSubsidiaryStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2692546_934491_1_1">Profit Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2692546_934491_2_1">Net income (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2692546_934491_6_1">NET INCOME (LOSS)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ProjectFinancing" xlink:label="omex_ProjectFinancing"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ProjectFinancing_lbl" xml:lang="en-US" id="id_2692546_1100941_3_1">Project financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ProjectFinancing_lbl" xml:lang="en-US" id="id_2692546_1100941_1_1">Project Financing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ProjectFinancing_lbl" xml:lang="en-US" id="id_2692546_1100941_2_1">Project financing</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ProjectFinancing" xlink:to="omex_ProjectFinancing_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ProjectTermLoanMember" xlink:label="omex_ProjectTermLoanMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ProjectTermLoanMember_lbl" xml:lang="en-US" id="id_2692546_1067406_3_1">Project term loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ProjectTermLoanMember_lbl" xml:lang="en-US" id="id_2692546_1067406_1_1">Project Term Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ProjectTermLoanMember_lbl" xml:lang="en-US" id="id_2692546_1067406_2_1">Project Term Loan [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ProjectTermLoanMember" xlink:to="omex_ProjectTermLoanMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" id="id_2692546_925379_1_1">Property Plant And Equipment [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" id="id_2692546_925379_2_1">Property, Plant and Equipment [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_2692546_940861_1_1">Property Plant And Equipment Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_2692546_940861_6_1">Total property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract" xlink:label="us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNetAbstract_lbl" xml:lang="en-US" id="id_2692546_923917_1_1">Property Plant And Equipment Net [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNetAbstract_lbl" xml:lang="en-US" id="id_2692546_923917_2_1">PROPERTY AND EQUIPMENT</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNetAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentNetAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928618_1_1">Property Plant And Equipment Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_928618_2_1">Property and Equipment and Depreciation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US" id="id_2692546_928464_1_1">Property Plant And Equipment Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US" id="id_2692546_928464_2_1">Property and Equipment, estimated useful life</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_2692546_926437_1_1">Range [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_2692546_926437_2_1">Range [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_2692546_930818_1_1">Range [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_2692546_930818_2_1">Range [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_RangeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="us-gaap_ReceivablesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivablesAbstract_lbl" xml:lang="en-US" id="id_2692546_927326_1_1">Receivables [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivablesAbstract_lbl" xml:lang="en-US" id="id_2692546_927326_2_1">Receivables [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesAbstract" xlink:to="us-gaap_ReceivablesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="us-gaap_ReceivableTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xml:lang="en-US" id="id_2692546_929556_1_1">Receivable Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xml:lang="en-US" id="id_2692546_929556_2_1">Receivable [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivableTypeDomain" xlink:to="us-gaap_ReceivableTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RedeemablePreferredStockDividendPercent" xlink:label="omex_RedeemablePreferredStockDividendPercent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RedeemablePreferredStockDividendPercent_lbl" xml:lang="en-US" id="id_2692546_941900_3_1">Redeemable preferred stock dividend.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RedeemablePreferredStockDividendPercent_lbl" xml:lang="en-US" id="id_2692546_941900_1_1">Redeemable Preferred Stock Dividend Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RedeemablePreferredStockDividendPercent_lbl" xml:lang="en-US" id="id_2692546_941900_2_1">Redeemable preferred stock dividend percent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RedeemablePreferredStockDividendPercent" xlink:to="omex_RedeemablePreferredStockDividendPercent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RedeemablePreferredStockDividends" xlink:label="us-gaap_RedeemablePreferredStockDividends"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RedeemablePreferredStockDividends_lbl" xml:lang="en-US" id="id_2692546_939847_1_1">Redeemable Preferred Stock Dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RedeemablePreferredStockDividends_lbl" xml:lang="en-US" id="id_2692546_939847_2_1">Redeemable preferred stock dividends</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RedeemablePreferredStockDividends" xlink:to="us-gaap_RedeemablePreferredStockDividends_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RedeemablePreferredStockMember" xlink:label="us-gaap_RedeemablePreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RedeemablePreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_928973_1_1">Redeemable Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RedeemablePreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_928973_2_1">Redeemable Preferred Stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RedeemablePreferredStockMember" xlink:to="us-gaap_RedeemablePreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RedeemablePreferredStockTextBlock" xlink:label="omex_RedeemablePreferredStockTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RedeemablePreferredStockTextBlock_lbl" xml:lang="en-US" id="id_2692546_985202_3_1">The entire disclosure regarding the carrying value (book value) of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RedeemablePreferredStockTextBlock_lbl" xml:lang="en-US" id="id_2692546_985202_1_1">Redeemable Preferred Stock [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RedeemablePreferredStockTextBlock_lbl" xml:lang="en-US" id="id_2692546_985202_2_1">Redeemable Series G Preferred Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RedeemablePreferredStockTextBlock" xlink:to="omex_RedeemablePreferredStockTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RedemptionPriceIncrementPercentage" xlink:label="omex_RedemptionPriceIncrementPercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RedemptionPriceIncrementPercentage_lbl" xml:lang="en-US" id="id_2692546_1185047_3_1">Redemption price increment percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RedemptionPriceIncrementPercentage_lbl" xml:lang="en-US" id="id_2692546_1185047_1_1">Redemption Price Increment Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RedemptionPriceIncrementPercentage_lbl" xml:lang="en-US" id="id_2692546_1185047_2_1">Percentage increase in share price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RedemptionPriceIncrementPercentage" xlink:to="omex_RedemptionPriceIncrementPercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RedemptionPricePercentOfLiquidationValue" xlink:label="omex_RedemptionPricePercentOfLiquidationValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RedemptionPricePercentOfLiquidationValue_lbl" xml:lang="en-US" id="id_2692546_998647_3_1">Redemption price percent of liquidation value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RedemptionPricePercentOfLiquidationValue_lbl" xml:lang="en-US" id="id_2692546_998647_1_1">Redemption Price Percent Of Liquidation Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RedemptionPricePercentOfLiquidationValue_lbl" xml:lang="en-US" id="id_2692546_998647_2_1">Redemption price percent of liquidation value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RedemptionPricePercentOfLiquidationValue" xlink:to="omex_RedemptionPricePercentOfLiquidationValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RedemptionsOfSeniorConvertibleNotes" xlink:label="omex_RedemptionsOfSeniorConvertibleNotes"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RedemptionsOfSeniorConvertibleNotes_lbl" xml:lang="en-US" id="id_2692546_992668_3_1">Redemptions of senior convertible notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RedemptionsOfSeniorConvertibleNotes_lbl" xml:lang="en-US" id="id_2692546_992668_1_1">Redemptions Of Senior Convertible Notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RedemptionsOfSeniorConvertibleNotes_lbl" xml:lang="en-US" id="id_2692546_992668_2_1">Redemptions of Senior Convertible Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RedemptionsOfSeniorConvertibleNotes" xlink:to="omex_RedemptionsOfSeniorConvertibleNotes_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RemainingAmountOfAccountReceivable" xlink:label="omex_RemainingAmountOfAccountReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RemainingAmountOfAccountReceivable_lbl" xml:lang="en-US" id="id_2692546_1075578_3_1">Remaining amount of account receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RemainingAmountOfAccountReceivable_lbl" xml:lang="en-US" id="id_2692546_1075578_1_1">Remaining Amount Of Account Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RemainingAmountOfAccountReceivable_lbl" xml:lang="en-US" id="id_2692546_1075578_2_1">Remaining amount of account receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RemainingAmountOfAccountReceivable" xlink:to="omex_RemainingAmountOfAccountReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RemainingFuturePayments" xlink:label="omex_RemainingFuturePayments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RemainingFuturePayments_lbl" xml:lang="en-US" id="id_2692546_1224155_3_1">Remaining future payments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RemainingFuturePayments_lbl" xml:lang="en-US" id="id_2692546_1224155_1_1">Remaining Future Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RemainingFuturePayments_lbl" xml:lang="en-US" id="id_2692546_1224155_2_1">Future Payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RemainingFuturePayments" xlink:to="omex_RemainingFuturePayments_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RepaymentOfMortgageAndLoansPayable" xlink:label="omex_RepaymentOfMortgageAndLoansPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RepaymentOfMortgageAndLoansPayable_lbl" xml:lang="en-US" id="id_2692546_989392_3_1">Repayment of mortgage and loans payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RepaymentOfMortgageAndLoansPayable_lbl" xml:lang="en-US" id="id_2692546_989392_1_1">Repayment Of Mortgage And Loans Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="omex_RepaymentOfMortgageAndLoansPayable_lbl" xml:lang="en-US" id="id_2692546_989392_14_1">Repayment of mortgage and loans payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RepaymentOfMortgageAndLoansPayable" xlink:to="omex_RepaymentOfMortgageAndLoansPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RepublicProjectMember" xlink:label="omex_RepublicProjectMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RepublicProjectMember_lbl" xml:lang="en-US" id="id_2692546_1048177_3_1">Republic project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RepublicProjectMember_lbl" xml:lang="en-US" id="id_2692546_1048177_1_1">Republic Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RepublicProjectMember_lbl" xml:lang="en-US" id="id_2692546_1048177_2_1">"Republic" (now "Seattle") Project [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RepublicProjectMember" xlink:to="omex_RepublicProjectMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:label="us-gaap_RepurchaseAgreementCounterpartyNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepurchaseAgreementCounterpartyNameDomain_lbl" xml:lang="en-US" id="id_2692546_924049_1_1">Repurchase Agreement Counterparty Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RepurchaseAgreementCounterpartyNameDomain_lbl" xml:lang="en-US" id="id_2692546_924049_2_1">Counterparty Name [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepurchaseAgreementCounterpartyNameDomain" xlink:to="us-gaap_RepurchaseAgreementCounterpartyNameDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" id="id_2692546_939407_1_1">Research And Development Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" id="id_2692546_939407_2_1">Operations and research</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="us-gaap_RestrictedCashAndCashEquivalents"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_2692546_938076_1_1">Restricted Cash And Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_2692546_938076_2_1">Restricted cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_2692546_938076_12_1">Restricted cash deposit for interest payments over the term of loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalents" xlink:to="us-gaap_RestrictedCashAndCashEquivalents_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2692546_937648_1_1">Restricted Cash And Cash Equivalents At Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2692546_937648_2_1">Restricted cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_lbl" xml:lang="en-US" id="id_2692546_926801_1_1">Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_lbl" xml:lang="en-US" id="id_2692546_926801_2_1">Restricted Cash and Cash Equivalents [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" id="id_2692546_929848_1_1">Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xml:lang="en-US" id="id_2692546_929848_2_1">Cash and Cash Equivalents [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xml:lang="en-US" id="id_2692546_931918_1_1">Restricted Cash And Cash Equivalents Items [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xml:lang="en-US" id="id_2692546_931918_2_1">Restricted Cash and Cash Equivalents Items [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RestrictedCashAndCashEquivalentsMaturityPeriod" xlink:label="omex_RestrictedCashAndCashEquivalentsMaturityPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RestrictedCashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1049945_3_1">Restricted cash and cash equivalents maturity period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RestrictedCashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1049945_1_1">Restricted Cash And Cash Equivalents Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RestrictedCashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1049945_2_1">Restricted cash and cash equivalents maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RestrictedCashAndCashEquivalentsMaturityPeriod" xlink:to="omex_RestrictedCashAndCashEquivalentsMaturityPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RestrictedCashAndCashEquivalentsReplenishRequired" xlink:label="omex_RestrictedCashAndCashEquivalentsReplenishRequired"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RestrictedCashAndCashEquivalentsReplenishRequired_lbl" xml:lang="en-US" id="id_2692546_1185040_3_1">Restricted cash and cash equivalents replenish required.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RestrictedCashAndCashEquivalentsReplenishRequired_lbl" xml:lang="en-US" id="id_2692546_1185040_1_1">Restricted Cash And Cash Equivalents Replenish Required</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RestrictedCashAndCashEquivalentsReplenishRequired_lbl" xml:lang="en-US" id="id_2692546_1185040_2_1">Restricted cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RestrictedCashAndCashEquivalentsReplenishRequired" xlink:to="omex_RestrictedCashAndCashEquivalentsReplenishRequired_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_2692546_923936_1_1">Restricted Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_2692546_923936_2_1">Unvested Restricted Stock Awards Excluded from EPS [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_2692546_929867_1_1">Restricted Stock Units R S U [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_2692546_929867_2_1">Restricted Stock Units (RSUs) [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetailRelatedInventoryMerchandise" xlink:label="us-gaap_RetailRelatedInventoryMerchandise"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetailRelatedInventoryMerchandise_lbl" xml:lang="en-US" id="id_2692546_939341_1_1">Retail Related Inventory Merchandise</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetailRelatedInventoryMerchandise_lbl" xml:lang="en-US" id="id_2692546_939341_2_1">Merchandise</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetailRelatedInventoryMerchandise" xlink:to="us-gaap_RetailRelatedInventoryMerchandise_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies" xlink:label="us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies_lbl" xml:lang="en-US" id="id_2692546_939888_1_1">Retail Related Inventory Packaging And Other Supplies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies_lbl" xml:lang="en-US" id="id_2692546_939888_2_1">Packaging</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies" xlink:to="us-gaap_RetailRelatedInventoryPackagingAndOtherSupplies_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US" id="id_2692546_935451_1_1">Retained Earnings Accumulated Deficit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US" id="id_2692546_935451_2_1">Accumulated deficit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RevenueOwedToCertificateHolders" xlink:label="omex_RevenueOwedToCertificateHolders"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_993668_3_1">Revenue owed to certificate holders.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_993668_1_1">Revenue Owed To Certificate Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RevenueOwedToCertificateHolders_lbl" xml:lang="en-US" id="id_2692546_993668_2_1">Revenue owed to certificate holder</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RevenueOwedToCertificateHolders" xlink:to="omex_RevenueOwedToCertificateHolders_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RevenueParticipationAgreementValue" xlink:label="omex_RevenueParticipationAgreementValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RevenueParticipationAgreementValue_lbl" xml:lang="en-US" id="id_2692546_1096035_3_1">Revenue participation agreement value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RevenueParticipationAgreementValue_lbl" xml:lang="en-US" id="id_2692546_1096035_1_1">Revenue Participation Agreement Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RevenueParticipationAgreementValue_lbl" xml:lang="en-US" id="id_2692546_1096035_2_1">Revenue participation agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RevenueParticipationAgreementValue" xlink:to="omex_RevenueParticipationAgreementValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RevenueParticipationCertificatesPerUnitValue" xlink:label="omex_RevenueParticipationCertificatesPerUnitValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RevenueParticipationCertificatesPerUnitValue_lbl" xml:lang="en-US" id="id_2692546_1136131_3_1">Revenue participation certificates per unit value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RevenueParticipationCertificatesPerUnitValue_lbl" xml:lang="en-US" id="id_2692546_1136131_1_1">Revenue Participation Certificates Per Unit Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RevenueParticipationCertificatesPerUnitValue_lbl" xml:lang="en-US" id="id_2692546_1136131_2_1">Revenue participation certificates, per unit value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RevenueParticipationCertificatesPerUnitValue" xlink:to="omex_RevenueParticipationCertificatesPerUnitValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RevenueParticipationRightsTextBlock" xlink:label="omex_RevenueParticipationRightsTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RevenueParticipationRightsTextBlock_lbl" xml:lang="en-US" id="id_2692546_1033569_3_1">The entire disclosure describing revenue participation rights. Describes the investment, the investor's return of investment and their participation in prorate sharing of future revenues related to specific projects as defined by an agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RevenueParticipationRightsTextBlock_lbl" xml:lang="en-US" id="id_2692546_1033569_1_1">Revenue Participation Rights [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RevenueParticipationRightsTextBlock_lbl" xml:lang="en-US" id="id_2692546_1033569_2_1">Revenue Participation Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RevenueParticipationRightsTextBlock" xlink:to="omex_RevenueParticipationRightsTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueRecognitionAbstract" xlink:label="us-gaap_RevenueRecognitionAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionAbstract_lbl" xml:lang="en-US" id="id_2692546_923454_1_1">Revenue Recognition [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionAbstract_lbl" xml:lang="en-US" id="id_2692546_923454_2_1">Revenue Recognition [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionAbstract" xlink:to="us-gaap_RevenueRecognitionAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_924259_1_1">Revenue Recognition Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_924259_2_1">Revenue Recognition and Accounts Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US" id="id_2692546_933119_1_1">Revenues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US" id="id_2692546_933119_6_1">Total revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US" id="id_2692546_929243_1_1">Revenues [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US" id="id_2692546_929243_2_1">REVENUE</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates" xlink:label="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_965741_3_1">Risk free rates using zero coupon country treasury security range of rates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_965741_1_1">Risk Free Rates Using Zero Coupon Country Treasury Security Range Of Rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates_lbl" xml:lang="en-US" id="id_2692546_965741_2_1">Risk free rates using zero coupon US Treasury Security rates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates" xlink:to="omex_RiskFreeRatesUsingZeroCouponCountryTreasurySecurityRangeOfRates_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RisksAndUncertaintiesAbstract" xlink:label="us-gaap_RisksAndUncertaintiesAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xml:lang="en-US" id="id_2692546_931870_1_1">Risks And Uncertainties [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xml:lang="en-US" id="id_2692546_931870_2_1">Risks and Uncertainties [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RisksAndUncertaintiesAbstract" xlink:to="us-gaap_RisksAndUncertaintiesAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xml:lang="en-US" id="id_2692546_931930_1_1">Sale Of Stock Number Of Shares Issued In Transaction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xml:lang="en-US" id="id_2692546_931930_2_1">Number of shares sold</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="us-gaap_SalesRevenueGoodsNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SalesRevenueGoodsNet_lbl" xml:lang="en-US" id="id_2692546_933695_1_1">Sales Revenue Goods Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SalesRevenueGoodsNet_lbl" xml:lang="en-US" id="id_2692546_933695_2_1">Artifact sales and other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueGoodsNet" xlink:to="us-gaap_SalesRevenueGoodsNet_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_2692546_930578_1_1">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_2692546_931898_1_1">Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="us-gaap_ScheduleOfShortTermDebtTable"/>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecondMortgageMember" xlink:label="us-gaap_SecondMortgageMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecondMortgageMember_lbl" xml:lang="en-US" id="id_2692546_926639_1_1">Second Mortgage [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecondMortgageMember_lbl" xml:lang="en-US" id="id_2692546_926639_2_1">Second Mortgage [Member]</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SecuredCollateral" xlink:label="omex_SecuredCollateral"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SecuredCollateral_lbl" xml:lang="en-US" id="id_2692546_1136278_3_1">Secured collateral.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SecuredCollateral_lbl" xml:lang="en-US" id="id_2692546_1136278_1_1">Secured Collateral</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebt" xlink:label="us-gaap_SecuredDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US" id="id_2692546_934455_1_1">Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US" id="id_2692546_934455_2_1">Bank borrowing</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredDebt" xlink:to="us-gaap_SecuredDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuritiesOwnedNotReadilyMarketable" xlink:label="us-gaap_SecuritiesOwnedNotReadilyMarketable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuritiesOwnedNotReadilyMarketable_lbl" xml:lang="en-US" id="id_2692546_940394_1_1">Securities Owned Not Readily Marketable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecuritiesOwnedNotReadilyMarketable_lbl" xml:lang="en-US" id="id_2692546_940394_2_1">Securities owned</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" id="id_2692546_940817_1_1">Selling General And Administrative Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" id="id_2692546_940817_2_1">Marketing, general and administrative</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SellingGeneralAndAdministrativeExpense" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpense_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance" xlink:label="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance_lbl" xml:lang="en-US" id="id_2692546_1028702_3_1">Senior convertible debit interest settled with common stock issuance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance_lbl" xml:lang="en-US" id="id_2692546_1028702_1_1">Senior Convertible Debit Interest Settled With Common Stock Issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance_lbl" xml:lang="en-US" id="id_2692546_1028702_2_1">Senior debt interest settled with common stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance" xlink:to="omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SeniorConvertibleNoteMember" xlink:label="omex_SeniorConvertibleNoteMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SeniorConvertibleNoteMember_lbl" xml:lang="en-US" id="id_2692546_1121596_3_1">Senior convertible note.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SeniorConvertibleNoteMember_lbl" xml:lang="en-US" id="id_2692546_1121596_1_1">Senior Convertible Note [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SeniorConvertibleNoteMember_lbl" xml:lang="en-US" id="id_2692546_1121596_2_1">Senior Convertible Note [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SeniorConvertibleNoteMember" xlink:to="omex_SeniorConvertibleNoteMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SeniorConvertibleNotesMember" xlink:label="omex_SeniorConvertibleNotesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SeniorConvertibleNotesMember_lbl" xml:lang="en-US" id="id_2692546_996644_3_1">Senior convertible notes.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SeniorConvertibleNotesMember_lbl" xml:lang="en-US" id="id_2692546_996644_1_1">Senior Convertible Notes [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SeniorConvertibleNotesMember_lbl" xml:lang="en-US" id="id_2692546_996644_2_1">Senior Convertible Notes [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SeniorConvertibleNotesMember" xlink:to="omex_SeniorConvertibleNotesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeriesDPreferredStockMember" xlink:label="us-gaap_SeriesDPreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesDPreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_929177_1_1">Series D Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeriesDPreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_929177_2_1">Preferred Stock Series D [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesDPreferredStockMember" xlink:to="us-gaap_SeriesDPreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SeriesGPreferredStockConversion" xlink:label="omex_SeriesGPreferredStockConversion"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SeriesGPreferredStockConversion_lbl" xml:lang="en-US" id="id_2692546_1017252_3_1">Series G Preferred Stock conversion.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SeriesGPreferredStockConversion_lbl" xml:lang="en-US" id="id_2692546_1017252_1_1">Series G Preferred Stock Conversion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SeriesGPreferredStockConversion_lbl" xml:lang="en-US" id="id_2692546_1017252_2_1">Series G Preferred Stock conversion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SeriesGPreferredStockConversion" xlink:to="omex_SeriesGPreferredStockConversion_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeriesGPreferredStockMember" xlink:label="us-gaap_SeriesGPreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesGPreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_928898_1_1">Series G Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeriesGPreferredStockMember_lbl" xml:lang="en-US" id="id_2692546_928898_2_1">Series G Convertible Preferred Stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesGPreferredStockMember" xlink:to="us-gaap_SeriesGPreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SettlementOfVendorPayableWithSubsidiaryStock" xlink:label="omex_SettlementOfVendorPayableWithSubsidiaryStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SettlementOfVendorPayableWithSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223406_3_1">Settlement of vendor payable with subsidiary stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SettlementOfVendorPayableWithSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223406_1_1">Settlement Of Vendor Payable With Subsidiary Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SettlementOfVendorPayableWithSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223406_2_1">Settlement of vendor payable with subsidiary stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SettlementOfVendorPayableWithSubsidiaryStock" xlink:to="omex_SettlementOfVendorPayableWithSubsidiaryStock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" id="id_2692546_938471_1_1">Share Based Compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" id="id_2692546_938471_2_1">Share-based compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition_lbl" xml:lang="en-US" id="id_2692546_982653_3_1">Share based compensation arrangement by share based payment award exercise price condition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition_lbl" xml:lang="en-US" id="id_2692546_982653_1_1">Share Based Compensation Arrangement By Share Based Payment Award Exercise Price Condition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition_lbl" xml:lang="en-US" id="id_2692546_982653_2_1">Exercise price of incentive option granted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition" xlink:to="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePriceCondition_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xml:lang="en-US" id="id_2692546_930017_1_1">Share Based Compensation Arrangement By Share Based Payment Award Expiration Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xml:lang="en-US" id="id_2692546_930017_2_1">Stock incentive plan expiration date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_lbl" xml:lang="en-US" id="id_2692546_926781_1_1">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_lbl" xml:lang="en-US" id="id_2692546_926781_2_1">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_2692546_928648_1_1">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_2692546_928648_2_1">Dividend yield</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US" id="id_2692546_926378_1_1">Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US" id="id_2692546_926378_2_1">Expected life of options</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_925061_1_1">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2692546_925061_2_1">Expected volatility of common stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2692546_924177_1_1">Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2692546_924177_2_1">Risk-free interest rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" id="id_2692546_926498_1_1">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" id="id_2692546_926498_2_1">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_929330_1_1">Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US" id="id_2692546_929330_2_1">Shares authorized for stock-based compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl" xml:lang="en-US" id="id_2692546_927305_1_1">Sharebased Compensation Arrangement By Sharebased Payment Award Purchase Price Of Common Stock Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl" xml:lang="en-US" id="id_2692546_927305_2_1">Purchase price of common stock percentage</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="id_2692546_928585_1_1">Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="id_2692546_928585_2_1">Equity Award [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue" xlink:label="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_2692546_967171_3_1">Share based compensation awards options estimated weighted average grant date fair value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_2692546_967171_1_1">Share Based Compensation Awards Options Estimated Weighted Average Grant Date Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_2692546_967171_2_1">Weighted average estimated fair value of stock options</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue" xlink:to="omex_ShareBasedCompensationAwardsOptionsEstimatedWeightedAverageGrantDateFairValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US" id="id_2692546_923943_1_1">Share Based Compensation Option And Incentive Plans Policy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US" id="id_2692546_923943_2_1">Stock-based Compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US" id="id_2692546_928548_1_1">Share Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US" id="id_2692546_928548_2_1">Value of shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SharesOfCommonStockIssuableUponExerciseOfWarrant" xlink:label="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant_lbl" xml:lang="en-US" id="id_2692546_1011939_3_1">Shares of common stock issuable upon exercise of warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant_lbl" xml:lang="en-US" id="id_2692546_1011939_1_1">Shares Of Common Stock Issuable Upon Exercise Of Warrant</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant_lbl" xml:lang="en-US" id="id_2692546_1011939_2_1">Common stock issued under warrant terms</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant" xlink:to="omex_SharesOfCommonStockIssuableUponExerciseOfWarrant_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SharesReceivedFromExchange" xlink:label="omex_SharesReceivedFromExchange"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SharesReceivedFromExchange_lbl" xml:lang="en-US" id="id_2692546_945351_3_1">Shares received from exchange.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SharesReceivedFromExchange_lbl" xml:lang="en-US" id="id_2692546_945351_1_1">Shares Received From Exchange</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SharesReceivedFromExchange_lbl" xml:lang="en-US" id="id_2692546_945351_2_1">Shares received from exchange</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SharesReceivedFromExchange" xlink:to="omex_SharesReceivedFromExchange_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SharesReceivedFromUnconsolidatedEntities" xlink:label="omex_SharesReceivedFromUnconsolidatedEntities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SharesReceivedFromUnconsolidatedEntities_lbl" xml:lang="en-US" id="id_2692546_1013913_3_1">Shares received from unconsolidated entities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SharesReceivedFromUnconsolidatedEntities_lbl" xml:lang="en-US" id="id_2692546_1013913_1_1">Shares Received From Unconsolidated Entities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SharesReceivedFromUnconsolidatedEntities_lbl" xml:lang="en-US" id="id_2692546_1013913_2_1">Shares received from CRP</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SharesReceivedFromUnconsolidatedEntities" xlink:to="omex_SharesReceivedFromUnconsolidatedEntities_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SharesUsedInComputationForEarningPerShareBasic" xlink:label="omex_SharesUsedInComputationForEarningPerShareBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SharesUsedInComputationForEarningPerShareBasic_lbl" xml:lang="en-US" id="id_2692546_1054394_3_1">Shares used in computation for earning per share, basic.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SharesUsedInComputationForEarningPerShareBasic_lbl" xml:lang="en-US" id="id_2692546_1054394_1_1">Shares Used In Computation For Earning Per Share Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SharesUsedInComputationForEarningPerShareBasic_lbl" xml:lang="en-US" id="id_2692546_1054394_2_1">Weighted average common shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SharesUsedInComputationForEarningPerShareBasic" xlink:to="omex_SharesUsedInComputationForEarningPerShareBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="us-gaap_ShortTermDebtLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtLineItems_lbl" xml:lang="en-US" id="id_2692546_929236_1_1">Short Term Debt [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtLineItems_lbl" xml:lang="en-US" id="id_2692546_929236_2_1">Short-term Debt [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtLineItems" xlink:to="us-gaap_ShortTermDebtLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="us-gaap_ShortTermDebtTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2692546_923847_1_1">Short Term Debt Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2692546_923847_2_1">Short-Term Debt, Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeAxis" xlink:to="us-gaap_ShortTermDebtTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="us-gaap_ShortTermDebtTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_923877_1_1">Short Term Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2692546_923877_2_1">Short-term Debt, Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeDomain" xlink:to="us-gaap_ShortTermDebtTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ShortTermInvestmentsMaturityPeriod" xlink:label="omex_ShortTermInvestmentsMaturityPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ShortTermInvestmentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1138766_3_1">Short-term investments maturity period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ShortTermInvestmentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1138766_1_1">Short Term Investments Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ShortTermInvestmentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2692546_1138766_2_1">Short-term investment maturity period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ShortTermInvestmentsMaturityPeriod" xlink:to="omex_ShortTermInvestmentsMaturityPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US" id="id_2692546_931089_1_1">Significant Accounting Policies [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US" id="id_2692546_931089_2_1">Summary of Significant Accounting Policies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SilverQuantity" xlink:label="omex_SilverQuantity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SilverQuantity_lbl" xml:lang="en-US" id="id_2692546_1030441_3_1">Silver quantity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SilverQuantity_lbl" xml:lang="en-US" id="id_2692546_1030441_1_1">Silver Quantity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SilverQuantity_lbl" xml:lang="en-US" id="id_2692546_1030441_2_1">Silver quantity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SilverQuantity" xlink:to="omex_SilverQuantity_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SmmProjectLimitedLiabilityCompanyMember" xlink:label="omex_SmmProjectLimitedLiabilityCompanyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SmmProjectLimitedLiabilityCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1126829_3_1">SMM project limited liability company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SmmProjectLimitedLiabilityCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1126829_1_1">Smm Project Limited Liability Company [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SmmProjectLimitedLiabilityCompanyMember_lbl" xml:lang="en-US" id="id_2692546_1126829_2_1">SMM Project, LLC [Member]</label>
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    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_SsGairsoppaMember" xlink:label="omex_SsGairsoppaMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SsGairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_963614_3_1">SS Gairsoppa.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SsGairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_963614_1_1">Ss Gairsoppa [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SsGairsoppaMember_lbl" xml:lang="en-US" id="id_2692546_963614_2_1">SS Gairsoppa [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SsGairsoppaMember" xlink:to="omex_SsGairsoppaMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US" id="id_2692546_932980_1_1">Statement Class Of Stock [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xml:lang="en-US" id="id_2692546_932980_2_1">Class of Stock [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_2692546_926570_1_1">Statement [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_2692546_926570_2_1">Statement [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="id_2692546_932756_1_1">Statement Of Cash Flows [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="id_2692546_932756_2_1">Statement of Cash Flows [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="id_2692546_924693_1_1">Statement Of Financial Position [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="id_2692546_924693_2_1">Statement of Financial Position [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US" id="id_2692546_926771_1_1">Statement [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US" id="id_2692546_926771_2_1">Statement [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockholdersDeficitTextualAbstract" xlink:label="omex_StockholdersDeficitTextualAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockholdersDeficitTextualAbstract_lbl" xml:lang="en-US" id="id_2692546_1046476_3_1">Stockholders deficit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockholdersDeficitTextualAbstract_lbl" xml:lang="en-US" id="id_2692546_1046476_1_1">Stockholders Deficit Textual [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockholdersDeficitTextualAbstract_lbl" xml:lang="en-US" id="id_2692546_1046476_2_1">Stockholders Deficit Textual [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockholdersDeficitTextualAbstract" xlink:to="omex_StockholdersDeficitTextualAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US" id="id_2692546_934682_1_1">Stockholders Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US" id="id_2692546_934682_2_1">Total stockholders' deficit before non-controlling interest</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2692546_925186_1_1">Stockholders Equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2692546_925186_2_1">STOCKHOLDERS' DEFICIT</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2692546_934503_1_1">Stockholders Equity Including Portion Attributable To Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2692546_934503_6_1">Total stockholders' deficit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_927127_1_1">Stockholders Equity Note Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2692546_927127_2_1">Stockholders' Deficit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy" xlink:label="us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy_lbl" xml:lang="en-US" id="id_2692546_929566_1_1">Stockholders Equity Note Redeemable Preferred Stock Issue Policy</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy_lbl" xml:lang="en-US" id="id_2692546_929566_2_1">Redeemable Preferred Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy" xlink:to="us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice" xlink:label="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice_lbl" xml:lang="en-US" id="id_2692546_1223405_3_1">Stock issued during period sale of subsidiary stock per share price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice_lbl" xml:lang="en-US" id="id_2692546_1223405_1_1">Stock Issued During Period Sale Of Subsidiary Stock Per Share Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice_lbl" xml:lang="en-US" id="id_2692546_1223405_2_1">Per share value of shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice" xlink:to="omex_StockIssuedDuringPeriodSaleOfSubsidiaryStockPerSharePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2692546_926238_1_1">Stock Issued During Period Shares Conversion Of Convertible Securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2692546_926238_2_1">Common shares issued from warrant conversion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_lbl" xml:lang="en-US" id="id_2692546_926812_1_1">Stock Issued During Period Shares Employee Benefit Plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_lbl" xml:lang="en-US" id="id_2692546_926812_2_1">Common stock shares issued employee stock incentive plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:to="us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock" xlink:label="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223403_3_1">Stock issued during period shares sale of subsidiary stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223403_1_1">Stock Issued During Period Shares Sale Of Subsidiary Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223403_2_1">Number of shares transferred</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock" xlink:to="omex_StockIssuedDuringPeriodSharesSaleOfSubsidiaryStock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock" xlink:label="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223404_3_1">Stock issued during period value sale of subsidiary stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223404_1_1">Stock Issued During Period Value Sale Of Subsidiary Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock_lbl" xml:lang="en-US" id="id_2692546_1223404_2_1">Value of shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock" xlink:to="omex_StockIssuedDuringPeriodValueSaleOfSubsidiaryStock_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceEightMember" xlink:label="omex_StockOptionsExercisePriceEightMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceEightMember_lbl" xml:lang="en-US" id="id_2692546_977234_3_1">Stock options exercise price eight.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceEightMember_lbl" xml:lang="en-US" id="id_2692546_977234_1_1">Stock Options Exercise Price Eight [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceEightMember_lbl" xml:lang="en-US" id="id_2692546_977234_2_1">Stock Options with an Exercise Price of $3.90 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceEightMember" xlink:to="omex_StockOptionsExercisePriceEightMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceElevenMember" xlink:label="omex_StockOptionsExercisePriceElevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceElevenMember_lbl" xml:lang="en-US" id="id_2692546_989847_3_1">Stock option exercise price eleven.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceElevenMember_lbl" xml:lang="en-US" id="id_2692546_989847_1_1">Stock Options Exercise Price Eleven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceElevenMember_lbl" xml:lang="en-US" id="id_2692546_989847_2_1">Stock Options with an Exercise Price of $7.00 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceElevenMember" xlink:to="omex_StockOptionsExercisePriceElevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceFiveMember" xlink:label="omex_StockOptionsExercisePriceFiveMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1059128_3_1">Stock options exercise price five.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1059128_1_1">Stock Options Exercise Price Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1059128_2_1">Stock Options with an Exercise Price of $3.50 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceFiveMember" xlink:to="omex_StockOptionsExercisePriceFiveMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceFourMember" xlink:label="omex_StockOptionsExercisePriceFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_1105448_3_1">Stock options exercise price four.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_1105448_1_1">Stock Options Exercise Price Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_1105448_2_1">Stock Options with an Exercise Price of $3.40 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceFourMember" xlink:to="omex_StockOptionsExercisePriceFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceNineMember" xlink:label="omex_StockOptionsExercisePriceNineMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceNineMember_lbl" xml:lang="en-US" id="id_2692546_962312_3_1">Stock options exercise price nine.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceNineMember_lbl" xml:lang="en-US" id="id_2692546_962312_1_1">Stock Options Exercise Price Nine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceNineMember_lbl" xml:lang="en-US" id="id_2692546_962312_2_1">Stock Options with an Exercise Price of $4.00 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceNineMember" xlink:to="omex_StockOptionsExercisePriceNineMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceSevenMember" xlink:label="omex_StockOptionsExercisePriceSevenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceSevenMember_lbl" xml:lang="en-US" id="id_2692546_1110175_3_1">Stock options exercise price seven.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceSevenMember_lbl" xml:lang="en-US" id="id_2692546_1110175_1_1">Stock Options Exercise Price Seven [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceSevenMember_lbl" xml:lang="en-US" id="id_2692546_1110175_2_1">Stock Options with an Exercise Price of $3.53 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceSevenMember" xlink:to="omex_StockOptionsExercisePriceSevenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceSixMember" xlink:label="omex_StockOptionsExercisePriceSixMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceSixMember_lbl" xml:lang="en-US" id="id_2692546_1019007_3_1">Stock options exercise price six.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceSixMember_lbl" xml:lang="en-US" id="id_2692546_1019007_1_1">Stock Options Exercise Price Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceSixMember_lbl" xml:lang="en-US" id="id_2692546_1019007_2_1">Stock Options with an Exercise Price of $3.51 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceSixMember" xlink:to="omex_StockOptionsExercisePriceSixMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceTenMember" xlink:label="omex_StockOptionsExercisePriceTenMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceTenMember_lbl" xml:lang="en-US" id="id_2692546_1141540_3_1">Stock option exercise price ten.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceTenMember_lbl" xml:lang="en-US" id="id_2692546_1141540_1_1">Stock Options Exercise Price Ten [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceTenMember_lbl" xml:lang="en-US" id="id_2692546_1141540_2_1">Stock Options with an Exercise Price of $5.00 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceTenMember" xlink:to="omex_StockOptionsExercisePriceTenMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceThreeMember" xlink:label="omex_StockOptionsExercisePriceThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceThreeMember_lbl" xml:lang="en-US" id="id_2692546_1037006_3_1">Stock options exercise price three.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceThreeMember_lbl" xml:lang="en-US" id="id_2692546_1037006_1_1">Stock Options Exercise Price Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceThreeMember_lbl" xml:lang="en-US" id="id_2692546_1037006_2_1">Stock Options with an Exercise Price of $3.25 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceThreeMember" xlink:to="omex_StockOptionsExercisePriceThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_StockOptionsExercisePriceTwoMember" xlink:label="omex_StockOptionsExercisePriceTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsExercisePriceTwoMember_lbl" xml:lang="en-US" id="id_2692546_1121218_3_1">Stock options exercise price two.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsExercisePriceTwoMember_lbl" xml:lang="en-US" id="id_2692546_1121218_1_1">Stock Options Exercise Price Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsExercisePriceTwoMember_lbl" xml:lang="en-US" id="id_2692546_1121218_2_1">Stock Options with an Exercise Price of $3.43 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsExercisePriceTwoMember" xlink:to="omex_StockOptionsExercisePriceTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="us-gaap_SubsequentEventMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US" id="id_2692546_931597_1_1">Subsequent Event [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US" id="id_2692546_931597_2_1">Subsequent Event [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_925983_1_1">Subsequent Events Policy Policy [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2692546_925983_2_1">Subsequent Events</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:to="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock_lbl" xml:lang="en-US" id="id_2692546_926365_1_1">Summary Of Valuation Allowance [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock_lbl" xml:lang="en-US" id="id_2692546_926365_2_1">Schedule of Change in Valuation Allowance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:to="us-gaap_SummaryOfValuationAllowanceTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_2692546_930441_1_1">Supplemental Cash Flow Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_2692546_930441_2_1">SUPPLEMENTARY INFORMATION:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans" xlink:label="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans_lbl" xml:lang="en-US" id="id_2692546_1017904_3_1">Tax benefits and (liabilities), prior to any valuation allowances, related to stock option plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans_lbl" xml:lang="en-US" id="id_2692546_1017904_1_1">Tax Benefits And Liabilities Prior To Any Valuation Allowances Related To Stock Option Plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans_lbl" xml:lang="en-US" id="id_2692546_1017904_2_1">Tax benefits and (liabilities), prior to any valuation allowances, related to stock option plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans" xlink:to="omex_TaxBenefitsAndLiabilitiesPriorToAnyValuationAllowancesRelatedToStockOptionPlans_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityByClassOfStockTable" xlink:label="us-gaap_TemporaryEquityByClassOfStockTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityByClassOfStockTable_lbl" xml:lang="en-US" id="id_2692546_932166_1_1">Temporary Equity By Class Of Stock [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityByClassOfStockTable_lbl" xml:lang="en-US" id="id_2692546_932166_2_1">Temporary Equity, by Class of Stock [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityByClassOfStockTable" xlink:to="us-gaap_TemporaryEquityByClassOfStockTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountAttributableToParent" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xml:lang="en-US" id="id_2692546_934783_1_1">Temporary Equity Carrying Amount Attributable To Parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xml:lang="en-US" id="id_2692546_934783_2_1">Temporary equity, carrying amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityCarryingAmountAttributableToParent" xlink:to="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TemporaryEquityConversionRightRatio" xlink:label="omex_TemporaryEquityConversionRightRatio"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TemporaryEquityConversionRightRatio_lbl" xml:lang="en-US" id="id_2692546_958200_3_1">Temporary equity conversion right ratio.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TemporaryEquityConversionRightRatio_lbl" xml:lang="en-US" id="id_2692546_958200_1_1">Temporary Equity Conversion Right Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TemporaryEquityConversionRightRatio_lbl" xml:lang="en-US" id="id_2692546_958200_2_1">Temporary equity, conversion right ratio</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TemporaryEquityConversionRightRatio" xlink:to="omex_TemporaryEquityConversionRightRatio_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityDisclosureAbstract" xlink:label="us-gaap_TemporaryEquityDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_931122_1_1">Temporary Equity Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityDisclosureAbstract_lbl" xml:lang="en-US" id="id_2692546_931122_2_1">Temporary Equity Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityDisclosureAbstract" xlink:to="us-gaap_TemporaryEquityDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityDividendsAdjustment" xlink:label="us-gaap_TemporaryEquityDividendsAdjustment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityDividendsAdjustment_lbl" xml:lang="en-US" id="id_2692546_938474_1_1">Temporary Equity Dividends Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_TemporaryEquityDividendsAdjustment_lbl" xml:lang="en-US" id="id_2692546_938474_14_1">Cumulative dividends on Series G Preferred Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityDividendsAdjustment" xlink:to="us-gaap_TemporaryEquityDividendsAdjustment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityLineItems" xlink:label="us-gaap_TemporaryEquityLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityLineItems_lbl" xml:lang="en-US" id="id_2692546_925421_1_1">Temporary Equity [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityLineItems_lbl" xml:lang="en-US" id="id_2692546_925421_2_1">Temporary Equity [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityLineItems" xlink:to="us-gaap_TemporaryEquityLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TemporaryEquityLiquidationPreferenceValue" xlink:label="omex_TemporaryEquityLiquidationPreferenceValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TemporaryEquityLiquidationPreferenceValue_lbl" xml:lang="en-US" id="id_2692546_1067407_3_1">Temporary equity liquidation preference value.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TemporaryEquityLiquidationPreferenceValue_lbl" xml:lang="en-US" id="id_2692546_1067407_1_1">Temporary Equity Liquidation Preference Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TemporaryEquityLiquidationPreferenceValue_lbl" xml:lang="en-US" id="id_2692546_1067407_2_1">Temporary equity, liquidation preference value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TemporaryEquityLiquidationPreferenceValue" xlink:to="omex_TemporaryEquityLiquidationPreferenceValue_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TemporaryEquityPaidInCapital" xlink:label="omex_TemporaryEquityPaidInCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TemporaryEquityPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_983724_3_1">Temporary equity paid in capital.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TemporaryEquityPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_983724_1_1">Temporary Equity Paid In Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TemporaryEquityPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_983724_2_1">Temporary equity paid in capital</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TemporaryEquityPaidInCapital" xlink:to="omex_TemporaryEquityPaidInCapital_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityParOrStatedValuePerShare" xlink:label="us-gaap_TemporaryEquityParOrStatedValuePerShare"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_928253_1_1">Temporary Equity Par Or Stated Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2692546_928253_2_1">Temporary equity, par or stated value per share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityParOrStatedValuePerShare" xlink:to="us-gaap_TemporaryEquityParOrStatedValuePerShare_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityRedemptionValue" xlink:label="us-gaap_TemporaryEquityRedemptionValue"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityRedemptionValue_lbl" xml:lang="en-US" id="id_2692546_933103_1_1">Temporary Equity Redemption Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityRedemptionValue_lbl" xml:lang="en-US" id="id_2692546_933103_2_1">Temporary equity, redemption value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityRedemptionValue" xlink:to="us-gaap_TemporaryEquityRedemptionValue_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquitySharesSubscribedButUnissued" xlink:label="us-gaap_TemporaryEquitySharesSubscribedButUnissued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquitySharesSubscribedButUnissued_lbl" xml:lang="en-US" id="id_2692546_927064_1_1">Temporary Equity Shares Subscribed But Unissued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquitySharesSubscribedButUnissued_lbl" xml:lang="en-US" id="id_2692546_927064_2_1">Temporary equity, shares subscribed but unissued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquitySharesSubscribedButUnissued" xlink:to="us-gaap_TemporaryEquitySharesSubscribedButUnissued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityShareSubscriptions" xlink:label="us-gaap_TemporaryEquityShareSubscriptions"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityShareSubscriptions_lbl" xml:lang="en-US" id="id_2692546_928825_1_1">Temporary Equity Share Subscriptions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TemporaryEquityShareSubscriptions_lbl" xml:lang="en-US" id="id_2692546_928825_2_1">Temporary equity, share subscriptions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityShareSubscriptions" xlink:to="us-gaap_TemporaryEquityShareSubscriptions_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TemporaryEquityValueExchange" xlink:label="omex_TemporaryEquityValueExchange"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TemporaryEquityValueExchange_lbl" xml:lang="en-US" id="id_2692546_967172_3_1">Temporary equity value exchange.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TemporaryEquityValueExchange_lbl" xml:lang="en-US" id="id_2692546_967172_1_1">Temporary Equity Value Exchange</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TemporaryEquityValueExchange_lbl" xml:lang="en-US" id="id_2692546_967172_2_1">Exchange</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TemporaryEquityValueExchange" xlink:to="omex_TemporaryEquityValueExchange_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital" xlink:label="us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_936713_1_1">Temporary Equity Value Excluding Additional Paid In Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_2692546_936713_6_1">Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital" xlink:to="us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TemporaryEquityValueFinancing" xlink:label="omex_TemporaryEquityValueFinancing"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TemporaryEquityValueFinancing_lbl" xml:lang="en-US" id="id_2692546_1084722_3_1">Temporary equity value financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TemporaryEquityValueFinancing_lbl" xml:lang="en-US" id="id_2692546_1084722_1_1">Temporary Equity Value Financing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TemporaryEquityValueFinancing_lbl" xml:lang="en-US" id="id_2692546_1084722_2_1">Cash paid for preferred stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="omex_TemporaryEquityValueFinancing_lbl" xml:lang="en-US" id="id_2692546_1084722_12_1">Financing</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TemporaryEquityValueFinancing" xlink:to="omex_TemporaryEquityValueFinancing_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TermLoanAmendmentMember" xlink:label="omex_TermLoanAmendmentMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TermLoanAmendmentMember_lbl" xml:lang="en-US" id="id_2692546_1123767_3_1">Term loan amendment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TermLoanAmendmentMember_lbl" xml:lang="en-US" id="id_2692546_1123767_1_1">Term Loan Amendment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TermLoanAmendmentMember_lbl" xml:lang="en-US" id="id_2692546_1123767_2_1">Term Loan Amendment [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TermLoanAmendmentMember" xlink:to="omex_TermLoanAmendmentMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_TermLoanMember" xlink:label="omex_TermLoanMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TermLoanMember_lbl" xml:lang="en-US" id="id_2692546_978559_3_1">Term loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TermLoanMember_lbl" xml:lang="en-US" id="id_2692546_978559_1_1">Term Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TermLoanMember_lbl" xml:lang="en-US" id="id_2692546_978559_2_1">Term Loan [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TermLoanMember" xlink:to="omex_TermLoanMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TextBlockAbstract" xlink:label="us-gaap_TextBlockAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_2692546_931202_1_1">Text Block [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_2692546_931202_2_1">Text Block [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TextBlockAbstract" xlink:to="us-gaap_TextBlockAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_ThirdPartyMember" xlink:label="omex_ThirdPartyMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ThirdPartyMember_lbl" xml:lang="en-US" id="id_2692546_976242_3_1">Third party.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ThirdPartyMember_lbl" xml:lang="en-US" id="id_2692546_976242_1_1">Third Party [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ThirdPartyMember_lbl" xml:lang="en-US" id="id_2692546_976242_2_1">Third Party [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ThirdPartyMember" xlink:to="omex_ThirdPartyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US" id="id_2692546_931855_1_1">Use Of Estimates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US" id="id_2692546_931855_2_1">Use of Estimates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xml:lang="en-US" id="id_2692546_935310_1_1">Valuation Allowance Deferred Tax Asset Change In Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xml:lang="en-US" id="id_2692546_935310_14_1">Change in valuation allowance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:to="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WarrantDerivativeMember" xlink:label="omex_WarrantDerivativeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantDerivativeMember_lbl" xml:lang="en-US" id="id_2692546_1007306_3_1">Warrant derivative.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantDerivativeMember_lbl" xml:lang="en-US" id="id_2692546_1007306_1_1">Warrant Derivative [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantDerivativeMember_lbl" xml:lang="en-US" id="id_2692546_1007306_2_1">Warrant Derivatives [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantDerivativeMember" xlink:to="omex_WarrantDerivativeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WarrantMember" xlink:label="us-gaap_WarrantMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US" id="id_2692546_929614_1_1">Warrant [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US" id="id_2692546_929614_2_1">Warrants [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WarrantsAndOptionsMember" xlink:label="omex_WarrantsAndOptionsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsAndOptionsMember_lbl" xml:lang="en-US" id="id_2692546_1054395_3_1">Warrants and options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsAndOptionsMember_lbl" xml:lang="en-US" id="id_2692546_1054395_1_1">Warrants And Options [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsAndOptionsMember_lbl" xml:lang="en-US" id="id_2692546_1054395_2_1">Options and Warrants Excluded from Diluted EPS [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantsAndOptionsMember" xlink:to="omex_WarrantsAndOptionsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WarrantsExercisePriceFiveMember" xlink:label="omex_WarrantsExercisePriceFiveMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1013914_3_1">Warrants exercise price five.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1013914_1_1">Warrants Exercise Price Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsExercisePriceFiveMember_lbl" xml:lang="en-US" id="id_2692546_1013914_2_1">Warrants with an Exercise Price of $5.25 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantsExercisePriceFiveMember" xlink:to="omex_WarrantsExercisePriceFiveMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WarrantsExercisePriceFourMember" xlink:label="omex_WarrantsExercisePriceFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_956756_3_1">Warrants exercise price four member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_956756_1_1">Warrants Exercise Price Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsExercisePriceFourMember_lbl" xml:lang="en-US" id="id_2692546_956756_2_1">Warrants with an Exercise Price of $3.60 Per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantsExercisePriceFourMember" xlink:to="omex_WarrantsExercisePriceFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WarrantyExpiryPeriod" xlink:label="omex_WarrantyExpiryPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantyExpiryPeriod_lbl" xml:lang="en-US" id="id_2692546_1066704_3_1">Warranty expiry period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantyExpiryPeriod_lbl" xml:lang="en-US" id="id_2692546_1066704_1_1">Warranty Expiry Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantyExpiryPeriod_lbl" xml:lang="en-US" id="id_2692546_1066704_2_1">Warranty expiry period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantyExpiryPeriod" xlink:to="omex_WarrantyExpiryPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xml:lang="en-US" id="id_2692546_925122_1_1">Weighted Average Number Diluted Shares Outstanding Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xml:lang="en-US" id="id_2692546_925122_2_1">Dilutive effect of potential common shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xml:lang="en-US" id="id_2692546_927586_1_1">Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xml:lang="en-US" id="id_2692546_927586_2_1">Shares used in computation - diluted:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_924805_1_1">Weighted Average Number Of Diluted Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_924805_2_1">Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_924805_6_1">Shares used in computing diluted net income per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2692546_924805_12_1">Weighted average number of common shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20130930.xsd#omex_WeightedAverageNumberOfSharesAdjustmentBasic" xlink:label="omex_WeightedAverageNumberOfSharesAdjustmentBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WeightedAverageNumberOfSharesAdjustmentBasic_lbl" xml:lang="en-US" id="id_2692546_1112974_3_1">Weighted Average Number Of Shares Adjustment Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WeightedAverageNumberOfSharesAdjustmentBasic_lbl" xml:lang="en-US" id="id_2692546_1112974_1_1">Weighted Average Number Of Shares Adjustment Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WeightedAverageNumberOfSharesAdjustmentBasic_lbl" xml:lang="en-US" id="id_2692546_1112974_2_1">Additional shares from participating securities per the two-class method</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WeightedAverageNumberOfSharesAdjustmentBasic" xlink:to="omex_WeightedAverageNumberOfSharesAdjustmentBasic_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
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