<?xml version="1.0" encoding="US-ASCII"?>
<!-- RR Donnelley Xcelerate Taxonomy Labels Linkbase, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
<!-- Version: 6.21.3 -->
<!-- Round: 5 -->
<!-- Creation date: 2014-11-08T04:24:57Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley &amp; Sons Company All Rights Reserved. -->
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl" xml:lang="en-US" id="id_5939046_1271908_2_1">Receivable Type [Axis]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1282972_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_5939046_1282972_2_1">Accounts payable</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:label="us-gaap_AccountsReceivableGrossCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xml:lang="en-US" id="id_5939046_1286759_1_1">Accounts Receivable, Gross, Current</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1288279_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_5939046_1288279_2_1">Accounts receivable and other, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xml:lang="en-US" id="id_5939046_1288279_6_1">Accounts receivable, net</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableRelatedParties" xlink:label="us-gaap_AccountsReceivableRelatedParties"/>
    <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_5939046_1287293_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_5939046_1287293_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-20140930.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_5939046_1484810_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_5939046_1484810_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_5939046_1484810_2_1">Accounts receivable transferred between related parties</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1283401_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_5939046_1283401_2_1">Accrued expenses and other</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
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    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1525711_3_1">Additional financing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_AdditionalFinancingMember_lbl" xml:lang="en-US" id="id_5939046_1525711_1_1">Additional Financing [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AdditionalFinancingMember_lbl" xml:lang="en-US" id="id_5939046_1525711_2_1">Additional Financing [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AdditionalNotesMember_lbl" xml:lang="en-US" id="id_5939046_1417283_3_1">Additional notes.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_AdditionalNotesMember_lbl" xml:lang="en-US" id="id_5939046_1417283_2_1">Additional Note [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1278564_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_5939046_1278564_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/2014/elts/us-gaap-2014-01-31.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_5939046_1285222_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_5939046_1285222_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="id_5939046_1285183_1_1">Allowance for Doubtful Accounts Receivable, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="id_5939046_1285183_2_1">Reserves for doubtful accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="id_5939046_1285183_14_1">Reserve for doubtful accounts receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_5939046_1276506_1_1">Amendment Flag</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_5939046_1285739_1_1">Amortization of Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_5939046_1285739_2_1">Loan fee amortization</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_AmortizationOfFinancingCostsIncludedInInterestExpense" xlink:label="omex_AmortizationOfFinancingCostsIncludedInInterestExpense"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_AmortizationOfFinancingCostsIncludedInInterestExpense_lbl" xml:lang="en-US" id="id_5939046_1446577_3_1">Amortization of financing costs included in interest expense.</label>
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    <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_5939046_1268730_2_1">Business Acquisition, Acquiree [Domain]</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_CambridgeProjectMember" xlink:label="omex_CambridgeProjectMember"/>
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    <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_5939046_1270366_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_5939046_1270366_2_1">Restricted Cash</label>
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    <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_5939046_1286290_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_5939046_1286290_6_1">NET (DECREASE) INCREASE IN CASH</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1275397_1_1">Cash and Cash Equivalents, Policy [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_5939046_1275397_2_1">Cash, Cash Equivalents and Restricted Cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1270378_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_5939046_1270378_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/2014/elts/us-gaap-2014-01-31.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_5939046_1286294_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_5939046_1286294_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-20140930.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_5939046_1549496_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_5939046_1549496_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_5939046_1549496_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="omex-20140930.xsd#omex_ClassbNonVotingCommonStockMember" xlink:label="omex_ClassbNonVotingCommonStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ClassbNonVotingCommonStockMember_lbl" xml:lang="en-US" id="id_5939046_1554539_3_1">Class B Non Voting Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ClassbNonVotingCommonStockMember_lbl" xml:lang="en-US" id="id_5939046_1554539_1_1">Classb Non Voting Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ClassbNonVotingCommonStockMember_lbl" xml:lang="en-US" id="id_5939046_1554539_2_1">Class B non-voting common stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ClassbNonVotingCommonStockMember" xlink:to="omex_ClassbNonVotingCommonStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277017_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_5939046_1277017_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xml:lang="en-US" id="id_5939046_1277019_1_1">Class of Warrant or Right, Date from which Warrants or Rights Exercisable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl" xml:lang="en-US" id="id_5939046_1277019_2_1">Warrants expiration date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable" xlink:to="us-gaap_ClassOfWarrantOrRighstDateFromWhichWarrantsOrRightsExercisable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1532141_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_5939046_1532141_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_5939046_1532141_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="us-gaap_ClassOfWarrantOrRightAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" id="id_5939046_1280248_1_1">Class of Warrant or Right [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" id="id_5939046_1280248_2_1">Class of Warrant or Right [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightAxis" xlink:to="us-gaap_ClassOfWarrantOrRightAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="us-gaap_ClassOfWarrantOrRightDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" id="id_5939046_1272026_1_1">Class of Warrant or Right [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" id="id_5939046_1272026_2_1">Class of Warrant or Right [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightDomain" xlink:to="us-gaap_ClassOfWarrantOrRightDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_ClassOfWarrantOrRightExercised" xlink:label="omex_ClassOfWarrantOrRightExercised"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ClassOfWarrantOrRightExercised_lbl" xml:lang="en-US" id="id_5939046_1540744_3_1">Class Of Warrant Or Right Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ClassOfWarrantOrRightExercised_lbl" xml:lang="en-US" id="id_5939046_1540744_1_1">Class Of Warrant Or Right Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ClassOfWarrantOrRightExercised_lbl" xml:lang="en-US" id="id_5939046_1540744_2_1">Warrants linked to common stock, exercised</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ClassOfWarrantOrRightExercised" xlink:to="omex_ClassOfWarrantOrRightExercised_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" id="id_5939046_1275410_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/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" id="id_5939046_1275410_2_1">Warrant exercise price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xml:lang="en-US" id="id_5939046_1275410_12_1">Warrants exercise price per share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277022_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_5939046_1277022_2_1">Warrants linked to common stock, outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" id="id_5939046_1277022_12_1">Warrants to purchase shares of common stock outstanding</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="omex-20140930.xsd#omex_ClassOfWarrantOrRightWarrantsIssued" xlink:label="omex_ClassOfWarrantOrRightWarrantsIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ClassOfWarrantOrRightWarrantsIssued_lbl" xml:lang="en-US" id="id_5939046_1412564_3_1">Class Of Warrant Or Right, Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ClassOfWarrantOrRightWarrantsIssued_lbl" xml:lang="en-US" id="id_5939046_1412564_1_1">Class Of Warrant Or Right, Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ClassOfWarrantOrRightWarrantsIssued_lbl" xml:lang="en-US" id="id_5939046_1412564_2_1">Warrants issued to acquire common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ClassOfWarrantOrRightWarrantsIssued" xlink:to="omex_ClassOfWarrantOrRightWarrantsIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1282923_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_5939046_1282923_2_1">Commitments and contingencies (Note H)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1272029_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_5939046_1272029_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="omex-20140930.xsd#omex_CommitmentsAndContingenciesDisclosuresAbstract" xlink:label="omex_CommitmentsAndContingenciesDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommitmentsAndContingenciesDisclosuresAbstract_lbl" xml:lang="en-US" id="id_5939046_1390374_3_1">Commitments And Contingencies Disclosures [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommitmentsAndContingenciesDisclosuresAbstract_lbl" xml:lang="en-US" id="id_5939046_1390374_1_1">Commitments And Contingencies Disclosures [Abstract]</label>
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    <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_5939046_1268805_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_5939046_1268805_2_1">Commitments and Contingencies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonClassAMember" xlink:label="us-gaap_CommonClassAMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonClassAMember_lbl" xml:lang="en-US" id="id_5939046_1277035_1_1">Common Class A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonClassAMember_lbl" xml:lang="en-US" id="id_5939046_1277035_2_1">Common Class A [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassAMember" xlink:to="us-gaap_CommonClassAMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonClassBMember_lbl" xml:lang="en-US" id="id_5939046_1270419_1_1">Common Class B [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonClassBMember_lbl" xml:lang="en-US" id="id_5939046_1270419_2_1">Common Class B [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassBMember" xlink:to="us-gaap_CommonClassBMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1410619_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_5939046_1410619_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_5939046_1410619_2_1">Common shares, issued, per unit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CommonSharesIssuedPerUnit" xlink:to="omex_CommonSharesIssuedPerUnit_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_CommonSharesOutstandingMember" xlink:label="omex_CommonSharesOutstandingMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_CommonSharesOutstandingMember_lbl" xml:lang="en-US" id="id_5939046_1464779_3_1">Common Shares Outstanding [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_CommonSharesOutstandingMember_lbl" xml:lang="en-US" id="id_5939046_1464779_1_1">Common Shares Outstanding [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_CommonSharesOutstandingMember_lbl" xml:lang="en-US" id="id_5939046_1464779_2_1">Common Shares Outstanding [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_CommonSharesOutstandingMember" xlink:to="omex_CommonSharesOutstandingMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1270422_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_5939046_1270422_2_1">Common Stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1268807_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_5939046_1268807_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/2014/elts/us-gaap-2014-01-31.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_5939046_1278675_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_5939046_1278675_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270423_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_5939046_1270423_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1268808_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_5939046_1268808_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-20140930.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_5939046_1479283_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_5939046_1479283_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_5939046_1479283_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1268809_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_5939046_1268809_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282921_1_1">Common Stock, Value, Issued</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_5939046_1282921_2_1">Common stock - $.0001 par value; 150,000,000 shares authorized; 85,321,008 and 83,882,577 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_5939046_1282921_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="omex-20140930.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_5939046_1392894_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_5939046_1392894_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_5939046_1392894_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270410_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_5939046_1270410_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277051_1_1">Consolidation, Policy [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_5939046_1277051_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277060_1_1">Conversion of Stock, Shares Converted</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_5939046_1277060_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-20140930.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_5939046_1443350_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_5939046_1443350_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_5939046_1443350_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertibleDebtMember" xlink:label="us-gaap_ConvertibleDebtMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleDebtMember_lbl" xml:lang="en-US" id="id_5939046_1270463_1_1">Convertible Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertibleDebtMember_lbl" xml:lang="en-US" id="id_5939046_1270463_2_1">Initial Note [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebtMember" xlink:to="us-gaap_ConvertibleDebtMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1283343_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_5939046_1283343_2_1">Convertible notes payable</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/2014/elts/us-gaap-2014-01-31.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_5939046_1275455_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_5939046_1275455_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270467_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_5939046_1270467_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion" xlink:label="us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion"/>
    <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_5939046_1278689_1_1">Convertible Preferred Stock, Shares Issued upon Conversion</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1286843_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_5939046_1286843_2_1">Cost of sales - artifacts and other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfGoodsSold" xlink:to="us-gaap_CostOfGoodsSold_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1272072_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_5939046_1272072_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="us-gaap_CreditFacilityAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityAxis_lbl" xml:lang="en-US" id="id_5939046_1275460_1_1">Credit Facility [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CreditFacilityAxis_lbl" xml:lang="en-US" id="id_5939046_1275460_2_1">Credit Facility [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="us-gaap_CreditFacilityDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CreditFacilityDomain_lbl" xml:lang="en-US" id="id_5939046_1278703_1_1">Credit Facility [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CreditFacilityDomain_lbl" xml:lang="en-US" id="id_5939046_1278703_2_1">Credit Facility [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1372713_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_5939046_1372713_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_5939046_1372713_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/2014/elts/us-gaap-2014-01-31.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_5939046_1286842_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_5939046_1286842_2_1">Income tax expense</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/2014/dei-2014-01-31.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_5939046_1276508_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_5939046_1276508_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282911_1_1">Debt Conversion, Converted Instrument, Amount</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_5939046_1282911_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_5939046_1282911_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/2014/elts/us-gaap-2014-01-31.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_5939046_1273804_1_1">Debt Conversion, Converted Instrument, Shares Issued</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_5939046_1273804_2_1">Common shares received in settlement of accounts receivable/Preferred non-voting Class A stock</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/2014/elts/us-gaap-2014-01-31.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_5939046_1273805_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_5939046_1273805_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/2014/elts/us-gaap-2014-01-31.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_5939046_1278728_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_5939046_1278728_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/2014/elts/us-gaap-2014-01-31.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_5939046_1280323_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_5939046_1280323_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US" id="id_5939046_1272083_1_1">Debt Instrument, Basis Spread on Variable Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US" id="id_5939046_1272083_2_1">Credit agreement margin LIBOR rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1425467_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_5939046_1425467_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_5939046_1425467_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283338_1_1">Long-term Debt, Gross</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_5939046_1283338_2_1">Loan amount borrowed</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/2014/elts/us-gaap-2014-01-31.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_5939046_1286324_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_5939046_1286324_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-20140930.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_5939046_1538993_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_5939046_1538993_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_5939046_1538993_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/2014/elts/us-gaap-2014-01-31.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_5939046_1273807_1_1">Debt Instrument, Convertible, Conversion Price</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_5939046_1273807_2_1">Conversion price of share purchase option</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_5939046_1273807_12_1">Conversion share price per share</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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl" xml:lang="en-US" id="id_5939046_1268866_1_1">Debt Instrument, Convertible, Number of Equity Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl" xml:lang="en-US" id="id_5939046_1268866_2_1">Conversion of shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:to="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277089_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_5939046_1277089_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270477_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_5939046_1270477_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283336_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_5939046_1283336_32_1">Original principal amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="id_5939046_1283336_33_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_5939046_1283336_2_1">Company's consolidated debt</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_5939046_1283336_12_1">Company's consolidated debt, face 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/2014/elts/us-gaap-2014-01-31.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_5939046_1278722_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_5939046_1278722_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270470_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_5939046_1270470_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_5939046_1270470_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_5939046_1270470_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/2014/elts/us-gaap-2014-01-31.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_5939046_1280314_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_5939046_1280314_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-20140930.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_5939046_1305442_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_5939046_1305442_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_5939046_1305442_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270473_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_5939046_1270473_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-20140930.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_5939046_1502503_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_5939046_1502503_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_5939046_1502503_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/2014/elts/us-gaap-2014-01-31.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_5939046_1280316_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_5939046_1280316_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_5939046_1280316_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270475_1_1">Debt Instrument, Maturity Date Range, Start</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_5939046_1270475_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/2014/elts/us-gaap-2014-01-31.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_5939046_1268871_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_5939046_1268871_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-20140930.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_5939046_1559683_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_5939046_1559683_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_5939046_1559683_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="omex-20140930.xsd#omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders" xlink:label="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders_lbl" xml:lang="en-US" id="id_5939046_1418193_3_1">Debt instrument percentage of principal amount issued to initial lenders.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders_lbl" xml:lang="en-US" id="id_5939046_1418193_1_1">Debt Instrument Percentage Of Principal Amount Issued To Initial Lenders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders_lbl" xml:lang="en-US" id="id_5939046_1418193_2_1">Initial principal amount of the note, stated percentage maximum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders" xlink:to="omex_DebtInstrumentPercentageOfPrincipalAmountIssuedToInitialLenders_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1286325_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_5939046_1286325_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/2014/elts/us-gaap-2014-01-31.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_5939046_1285831_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_5939046_1285831_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-20140930.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_5939046_1403361_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_5939046_1403361_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_5939046_1403361_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-20140930.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_5939046_1539258_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_5939046_1539258_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_5939046_1539258_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/2014/elts/us-gaap-2014-01-31.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_5939046_1286326_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_5939046_1286326_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"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_DebtInstrumentRevisedMaturityDate" xlink:label="omex_DebtInstrumentRevisedMaturityDate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DebtInstrumentRevisedMaturityDate_lbl" xml:lang="en-US" id="id_5939046_1550769_3_1">Debt instrument revised maturity date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DebtInstrumentRevisedMaturityDate_lbl" xml:lang="en-US" id="id_5939046_1550769_1_1">Debt Instrument Revised Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DebtInstrumentRevisedMaturityDate_lbl" xml:lang="en-US" id="id_5939046_1550769_2_1">New maturity date of mortgage loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DebtInstrumentRevisedMaturityDate" xlink:to="omex_DebtInstrumentRevisedMaturityDate_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="us-gaap_DebtInstrumentTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentTable_lbl" xml:lang="en-US" id="id_5939046_1273820_1_1">Schedule of Long-term Debt Instruments [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentTable_lbl" xml:lang="en-US" id="id_5939046_1273820_2_1">Schedule of Long-term Debt Instruments [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xml:lang="en-US" id="id_5939046_1281975_1_1">Debt Instrument, Unused Borrowing Capacity, Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl" xml:lang="en-US" id="id_5939046_1281975_2_1">Remaining loan amount not yet taken</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:to="us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtIssuanceCosts" xlink:label="us-gaap_DebtIssuanceCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtIssuanceCosts_lbl" xml:lang="en-US" id="id_5939046_1288906_1_1">Debt Issuance Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtIssuanceCosts_lbl" xml:lang="en-US" id="id_5939046_1288906_2_1">Debt related expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtIssuanceCosts" xlink:to="us-gaap_DebtIssuanceCosts_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueArrangementTypeDomain_lbl" xml:lang="en-US" id="id_5939046_1275514_2_1">Deferred Revenue [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xml:lang="en-US" id="id_5939046_1284239_2_1">Deferred income and revenue participation rights</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueDisclosureAbstract" xlink:label="us-gaap_DeferredRevenueDisclosureAbstract"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueDisclosureAbstract" xlink:to="us-gaap_DeferredRevenueDisclosureAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueNoncurrent" xlink:label="us-gaap_DeferredRevenueNoncurrent"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRevenueNoncurrent_lbl" xml:lang="en-US" id="id_5939046_1281965_1_1">Deferred Revenue, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueNoncurrent_lbl" xml:lang="en-US" id="id_5939046_1281965_2_1">Deferred income and revenue participation rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredRevenueNoncurrent_lbl" xml:lang="en-US" id="id_5939046_1281965_12_1">Participating revenue rights</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredRevenueRevenueRecognized" xlink:label="us-gaap_DeferredRevenueRevenueRecognized"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRevenueRevenueRecognized_lbl" xml:lang="en-US" id="id_5939046_1285327_1_1">Deferred Revenue, Revenue Recognized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueRevenueRecognized_lbl" xml:lang="en-US" id="id_5939046_1285327_2_1">Deferred revenue, amortization</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueRevenueRecognized" xlink:to="us-gaap_DeferredRevenueRevenueRecognized_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xml:lang="en-US" id="id_5939046_1287893_1_1">Deferred Tax Assets, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xml:lang="en-US" id="id_5939046_1287893_2_1">Net deferred tax asset</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_5939046_1287389_2_1">Net operating loss carryforwards, federal</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_lbl" xml:lang="en-US" id="id_5939046_1286881_1_1">Deferred Tax Assets, Operating Loss Carryforwards, Foreign</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_lbl" xml:lang="en-US" id="id_5939046_1286881_2_1">Net operating loss carryforwards, foreign</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_lbl" xml:lang="en-US" id="id_5939046_1287390_1_1">Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_lbl" xml:lang="en-US" id="id_5939046_1287390_2_1">Income tax net operating loss carryforwards</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
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    <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_5939046_1281963_2_1">Valuation allowance</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeByNatureAxis" xlink:to="us-gaap_DerivativeByNatureAxis_lbl"/>
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    <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_5939046_1273866_2_1">Derivative Contract [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsEffectOfContractualConversionRates_lbl" xml:lang="en-US" id="id_5939046_1547507_2_1">Range of effective contractual conversion rates</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsLinkedCommonShares_lbl" xml:lang="en-US" id="id_5939046_1554733_3_1">Derivative financial instruments fair value assumptions linked common shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsLinkedCommonShares_lbl" xml:lang="en-US" id="id_5939046_1554733_1_1">Derivative Financial Instruments Fair Value Assumptions Linked Common Shares</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates_lbl" xml:lang="en-US" id="id_5939046_1310178_3_1">Derivative financial instruments fair value assumptions market risk adjusted rate range of rates.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates_lbl" xml:lang="en-US" id="id_5939046_1310178_1_1">Derivative Financial Instruments Fair Value Assumptions Market Risk Adjusted Rate Range Of Rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsMarketRiskAdjustedRateRangeOfRates_lbl" xml:lang="en-US" id="id_5939046_1310178_2_1">Range of equivalent market risk adjusted interest 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_5939046_1418401_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_5939046_1418401_1_1">Derivative Financial Instruments Fair Value Assumptions Quoted Market Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsQuotedMarketPrice_lbl" xml:lang="en-US" id="id_5939046_1418401_2_1">Quoted market price/ underlying price on valuation date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueAssumptionsQuotedMarketPrice_lbl" xml:lang="en-US" id="id_5939046_1418401_12_1">Underlying price per share used in the MCS calculations</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity" xlink:label="omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity_lbl" xml:lang="en-US" id="id_5939046_1337927_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_5939046_1337927_1_1">Derivative Financial Instruments Fair Value Contractual Term To Maturity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DerivativeFinancialInstrumentsFairValueContractualTermToMaturity_lbl" xml:lang="en-US" id="id_5939046_1337927_2_1">Contractual term to maturity</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet"/>
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    <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_5939046_1283304_2_1">Derivative income (expense)</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1278779_1_1">Derivative Instrument [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xml:lang="en-US" id="id_5939046_1278779_2_1">Derivative Instrument [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeInstrumentRiskAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_5939046_1280388_1_1">Derivative Instruments and Hedging Activities Disclosure [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_5939046_1280388_2_1">Derivative Instruments and Hedging Activities Disclosure [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_5939046_1284219_1_1">Derivative Liability, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_5939046_1284219_2_1">Derivative liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="us-gaap_DerivativeLineItems"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLineItems_lbl" xml:lang="en-US" id="id_5939046_1272196_1_1">Derivative [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLineItems_lbl" xml:lang="en-US" id="id_5939046_1272196_2_1">Derivative [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeLineItems_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeNameDomain" xlink:label="us-gaap_DerivativeNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeNameDomain_lbl" xml:lang="en-US" id="id_5939046_1272198_1_1">Derivative, Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeNameDomain_lbl" xml:lang="en-US" id="id_5939046_1272198_2_1">Derivative, Name [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeNameDomain" xlink:to="us-gaap_DerivativeNameDomain_lbl"/>
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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_5939046_1272166_1_1">Derivative [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeTable_lbl" xml:lang="en-US" id="id_5939046_1272166_2_1">Derivative [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeTermOfContract" xlink:label="us-gaap_DerivativeTermOfContract"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeTermOfContract_lbl" xml:lang="en-US" id="id_5939046_1272167_2_1">Term (years)</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_DistributionRatioOfRemainingNetProceed_lbl" xml:lang="en-US" id="id_5939046_1482588_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_5939046_1482588_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_5939046_1482588_2_1">Ratio of remaining net proceed</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DistributionRatioOfRemainingNetProceed" xlink:to="omex_DistributionRatioOfRemainingNetProceed_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1404999_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_5939046_1404999_1_1">Dividends Received From Subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DividendsReceivedFromSubsidiary_lbl" xml:lang="en-US" id="id_5939046_1404999_2_1">Dividend from subsidiaries</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DividendsReceivedFromSubsidiary" xlink:to="omex_DividendsReceivedFromSubsidiary_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1430739_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_5939046_1430739_1_1">Document And Entity Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_5939046_1430739_2_1">Document And Entity Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_DocumentAndEntityInformationAbstract" xlink:to="omex_DocumentAndEntityInformationAbstract_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.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_5939046_1279677_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_5939046_1279677_2_1">Document Fiscal Period Focus</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_5939046_1276510_1_1">Document Fiscal Year Focus</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_5939046_1276510_2_1">Document Fiscal Year Focus</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="id_5939046_1274889_1_1">Document Period End Date</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1268988_1_1">Earnings Per Share, Policy [Policy Text Block]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EmbeddedDerivativeMember_lbl" xml:lang="en-US" id="id_5939046_1475845_3_1">Embedded Derivative [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EmbeddedDerivativeMember_lbl" xml:lang="en-US" id="id_5939046_1475845_1_1">Embedded Derivative [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EmbeddedDerivativeMember_lbl" xml:lang="en-US" id="id_5939046_1475845_2_1">Derivative [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EmbeddedDerivativeMember" xlink:to="omex_EmbeddedDerivativeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.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_5939046_1278115_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_5939046_1278115_2_1">Entity Central Index Key</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.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_5939046_1271511_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_5939046_1271511_2_1">Entity Filer Category</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.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_5939046_1269875_1_1">Entity Registrant Name</label>
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    <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_5939046_1269012_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_5939046_1269012_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US" id="id_5939046_1272258_2_1">Equity Component [Domain]</label>
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    <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_5939046_1275647_2_1">Ownership percentage</label>
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    <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_5939046_1286391_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_5939046_1286391_2_1">Book value of investment</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EquityMethodInvestmentsAndCostMethodInvestmentsAbstract_lbl" xml:lang="en-US" id="id_5939046_1386421_2_1">Equity Method Investments And Cost Method Investments [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1287436_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_5939046_1287436_2_1">Fair value of investment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsFairValueDisclosure" xlink:to="us-gaap_EquityMethodInvestmentsFairValueDisclosure_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1527981_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_5939046_1527981_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_5939046_1527981_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-20140930.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_5939046_1460675_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_5939046_1460675_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_5939046_1460675_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-20140930.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_5939046_1337290_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_5939046_1337290_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_5939046_1337290_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-20140930.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_5939046_1540864_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_5939046_1540864_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_5939046_1540864_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-20140930.xsd#omex_EstimatedAnnualEffectiveTaxRate" xlink:label="omex_EstimatedAnnualEffectiveTaxRate"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_EstimatedAnnualEffectiveTaxRate_lbl" xml:lang="en-US" id="id_5939046_1338867_3_1">Estimated Annual Effective Tax Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_EstimatedAnnualEffectiveTaxRate_lbl" xml:lang="en-US" id="id_5939046_1338867_1_1">Estimated Annual Effective Tax Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_EstimatedAnnualEffectiveTaxRate_lbl" xml:lang="en-US" id="id_5939046_1338867_2_1">Estimated annual effective tax rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_EstimatedAnnualEffectiveTaxRate" xlink:to="omex_EstimatedAnnualEffectiveTaxRate_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1424091_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_5939046_1424091_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_5939046_1424091_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-20140930.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_5939046_1292992_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_5939046_1292992_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_5939046_1292992_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xml:lang="en-US" id="id_5939046_1270657_1_1">Asset Class [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xml:lang="en-US" id="id_5939046_1270657_2_1">Asset Class [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssumptionsExercisePrice" xlink:label="us-gaap_FairValueAssumptionsExercisePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1275668_1_1">Fair Value Assumptions, Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1275668_2_1">Contractual exercise rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExercisePrice" xlink:to="us-gaap_FairValueAssumptionsExercisePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1270658_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_5939046_1270658_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/2014/elts/us-gaap-2014-01-31.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_5939046_1273985_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_5939046_1273985_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_5939046_1273985_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="omex-20140930.xsd#omex_FairValueAssumptionsLinkedCommonShares" xlink:label="omex_FairValueAssumptionsLinkedCommonShares"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FairValueAssumptionsLinkedCommonShares_lbl" xml:lang="en-US" id="id_5939046_1590858_3_1">Fair Value Assumptions Linked Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FairValueAssumptionsLinkedCommonShares_lbl" xml:lang="en-US" id="id_5939046_1590858_1_1">Fair Value Assumptions Linked Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FairValueAssumptionsLinkedCommonShares_lbl" xml:lang="en-US" id="id_5939046_1590858_2_1">Linked common shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FairValueAssumptionsLinkedCommonShares" xlink:to="omex_FairValueAssumptionsLinkedCommonShares_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_FairValueAssumptionsQuotedPrice" xlink:label="omex_FairValueAssumptionsQuotedPrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FairValueAssumptionsQuotedPrice_lbl" xml:lang="en-US" id="id_5939046_1590850_3_1">Fair value assumptions quoted price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FairValueAssumptionsQuotedPrice_lbl" xml:lang="en-US" id="id_5939046_1590850_1_1">Fair Value Assumptions Quoted Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FairValueAssumptionsQuotedPrice_lbl" xml:lang="en-US" id="id_5939046_1590850_2_1">Quoted market price on valuation date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FairValueAssumptionsQuotedPrice" xlink:to="omex_FairValueAssumptionsQuotedPrice_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277268_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_5939046_1277268_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272287_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_5939046_1272287_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-20140930.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_5939046_1391534_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_5939046_1391534_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_5939046_1391534_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="us-gaap_FairValueByAssetClassAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xml:lang="en-US" id="id_5939046_1275669_1_1">Asset Class [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xml:lang="en-US" id="id_5939046_1275669_2_1">Asset Class [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByAssetClassAxis" xlink:to="us-gaap_FairValueByAssetClassAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1269038_1_1">Fair Value, Hierarchy [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_5939046_1269038_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/2014/elts/us-gaap-2014-01-31.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_5939046_1275680_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_5939046_1275680_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsProbabilityOfDefault" xlink:label="us-gaap_FairValueInputsProbabilityOfDefault"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsProbabilityOfDefault_lbl" xml:lang="en-US" id="id_5939046_1270670_1_1">Fair Value Inputs, Probability of Default</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsProbabilityOfDefault_lbl" xml:lang="en-US" id="id_5939046_1270670_2_1">Custom lattice variable: Probability of exercisability (434,027 linked common shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsProbabilityOfDefault" xlink:to="us-gaap_FairValueInputsProbabilityOfDefault_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
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    <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_5939046_1270691_1_1">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_5939046_1270691_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282839_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_5939046_1282839_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283239_1_1">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" id="id_5939046_1283239_2_1">Issuances</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277300_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_5939046_1277300_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284181_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_5939046_1284181_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_5939046_1284181_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/2014/elts/us-gaap-2014-01-31.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_5939046_1280532_1_1">Fair Value of Financial Instruments, Policy [Policy Text Block]</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_5939046_1280532_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-20140930.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_5939046_1363708_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_5939046_1363708_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_5939046_1363708_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-20140930.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_5939046_1411434_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_5939046_1411434_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_5939046_1411434_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="omex-20140930.xsd#omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards" xlink:label="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_5939046_1495906_3_1">Federal tax benefit related to operating loss carryforwards.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_5939046_1495906_1_1">Federal Tax Benefit Related To Operating Loss Carryforwards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards_lbl" xml:lang="en-US" id="id_5939046_1495906_2_1">Cash tax benefit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards" xlink:to="omex_FederalTaxBenefitRelatedToOperatingLossCarryforwards_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xml:lang="en-US" id="id_5939046_1275735_1_1">Class of Financing Receivable [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xml:lang="en-US" id="id_5939046_1275735_2_1">Class of Financing Receivable [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xml:lang="en-US" id="id_5939046_1269101_1_1">Class of Financing Receivable [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xml:lang="en-US" id="id_5939046_1269101_2_1">Class of Financing Receivable [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain" xlink:to="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1275739_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_5939046_1275739_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1287481_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_5939046_1287481_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270759_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_5939046_1270759_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272406_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_5939046_1272406_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xml:lang="en-US" id="id_5939046_1284152_1_1">Gain (Loss) on Derivative Instruments, Net, Pretax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xml:lang="en-US" id="id_5939046_1284152_2_1">Change in derivative liabilities fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xml:lang="en-US" id="id_5939046_1284152_6_1">Total derivative income (expense)</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainOnDerivativeInstrumentsPretax" xlink:label="us-gaap_GainOnDerivativeInstrumentsPretax"/>
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    <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_5939046_1285009_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-20140930.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_5939046_1337333_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_5939046_1337333_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_5939046_1337333_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-20140930.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_5939046_1478865_3_1">Galt resources, LLC.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_GaltResourcesLlcHmsVictoryMember_lbl" xml:lang="en-US" id="id_5939046_1478865_2_1">Galt Resources, LLC (HMS Victory) [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US" id="id_5939046_1272476_2_1">Income Statement [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US" id="id_5939046_1274159_1_1">Income Statement Location [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US" id="id_5939046_1274159_2_1">Income Statement Location [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xml:lang="en-US" id="id_5939046_1270824_1_1">Income Statement Location [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xml:lang="en-US" id="id_5939046_1270824_2_1">Income Statement Location [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xml:lang="en-US" id="id_5939046_1280651_2_1">Income Tax Authority [Axis]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xml:lang="en-US" id="id_5939046_1279066_2_1">Income Tax Authority [Domain]</label>
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    <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_5939046_1287018_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_5939046_1287018_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282774_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_5939046_1282774_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270835_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_5939046_1270835_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/2014/elts/us-gaap-2014-01-31.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_5939046_1274167_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_5939046_1274167_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282772_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_5939046_1282772_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281825_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_5939046_1281825_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-20140930.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_5939046_1496465_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_5939046_1496465_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_5939046_1496465_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-20140930.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_5939046_1365124_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_5939046_1365124_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_5939046_1365124_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-20140930.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_5939046_1383918_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_5939046_1383918_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_5939046_1383918_2_1">In the 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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestBearingDepositsMember" xlink:label="us-gaap_InterestBearingDepositsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestBearingDepositsMember_lbl" xml:lang="en-US" id="id_5939046_1279099_1_1">Interest-bearing Deposits [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestBearingDepositsMember_lbl" xml:lang="en-US" id="id_5939046_1279099_2_1">Interest-bearing Deposits [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestBearingDepositsMember" xlink:to="us-gaap_InterestBearingDepositsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1285466_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_5939046_1285466_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/2014/elts/us-gaap-2014-01-31.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_5939046_1286006_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_5939046_1286006_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-20140930.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_5939046_1317029_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_5939046_1317029_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_5939046_1317029_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284523_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_5939046_1284523_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-20140930.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_5939046_1294019_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_5939046_1294019_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_5939046_1294019_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270865_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_5939046_1270865_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272541_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_5939046_1272541_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/2014/elts/us-gaap-2014-01-31.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_5939046_1288055_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_5939046_1288055_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/2014/elts/us-gaap-2014-01-31.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_5939046_1289069_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_5939046_1289069_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_5939046_1289069_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/2014/elts/us-gaap-2014-01-31.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_5939046_1269208_1_1">Inventory, Policy [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_5939046_1269208_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281803_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_5939046_1281803_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="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentAxis" xlink:label="invest_InvestmentAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="invest_InvestmentAxis_lbl" xml:lang="en-US" id="id_5939046_1271458_1_1">Investment [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="invest_InvestmentAxis_lbl" xml:lang="en-US" id="id_5939046_1271458_2_1">Investment [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="invest_InvestmentAxis" xlink:to="invest_InvestmentAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="invest_InvestmentDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="invest_InvestmentDomain_lbl" xml:lang="en-US" id="id_5939046_1279632_1_1">Investment [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="invest_InvestmentDomain_lbl" xml:lang="en-US" id="id_5939046_1279632_2_1">Investment [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="invest_InvestmentDomain" xlink:to="invest_InvestmentDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1450112_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_5939046_1450112_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_5939046_1450112_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283640_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_5939046_1283640_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-20140930.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_5939046_1460644_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_5939046_1460644_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_5939046_1460644_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-20140930.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_5939046_1464158_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_5939046_1464158_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_5939046_1464158_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="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentOptionsExercisePrice" xlink:label="invest_InvestmentOptionsExercisePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="invest_InvestmentOptionsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1273087_1_1">Investment Options, Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="invest_InvestmentOptionsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1273087_2_1">Stock options exercise price per share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="invest_InvestmentOptionsExercisePrice" xlink:to="invest_InvestmentOptionsExercisePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1313243_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_5939046_1313243_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_5939046_1313243_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1288060_1_1">Investments in and Advance to 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_5939046_1288060_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="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentWarrantsExercisePrice" xlink:label="invest_InvestmentWarrantsExercisePrice"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="invest_InvestmentWarrantsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1273090_1_1">Investment Warrants, Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="invest_InvestmentWarrantsExercisePrice_lbl" xml:lang="en-US" id="id_5939046_1273090_2_1">Warrants exercise price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="invest_InvestmentWarrantsExercisePrice" xlink:to="invest_InvestmentWarrantsExercisePrice_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1481703_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_5939046_1481703_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_5939046_1481703_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="omex-20140930.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_5939046_1345476_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_5939046_1345476_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_5939046_1345476_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284515_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_5939046_1284515_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283630_1_1">Liabilities and 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_5939046_1283630_6_1">Total liabilities and stockholders' equity</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/2014/elts/us-gaap-2014-01-31.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_5939046_1275871_1_1">Liabilities and 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_5939046_1275871_2_1">LIABILITIES AND STOCKHOLDERS' EQUITY</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/2014/elts/us-gaap-2014-01-31.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_5939046_1282281_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_5939046_1282281_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272565_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_5939046_1272565_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282747_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_5939046_1282747_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279144_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_5939046_1279144_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCredit" xlink:label="us-gaap_LineOfCredit"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US" id="id_5939046_1284503_1_1">Long-term Line of Credit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US" id="id_5939046_1284503_2_1">Outstanding loan balance</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeeAmount"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeeAmount_lbl" xml:lang="en-US" id="id_5939046_1286526_1_1">Line of Credit Facility, Commitment Fee Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeeAmount_lbl" xml:lang="en-US" id="id_5939046_1286526_2_1">Origination fee payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:to="us-gaap_LineOfCreditFacilityCommitmentFeeAmount_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xml:lang="en-US" id="id_5939046_1282265_1_1">Line of Credit Facility, Current Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xml:lang="en-US" id="id_5939046_1282265_2_1">Credit facility agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1279167_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_5939046_1279167_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod" xlink:label="us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod_lbl" xml:lang="en-US" id="id_5939046_1284063_1_1">Line of Credit Facility, Maximum Amount Outstanding During Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod_lbl" xml:lang="en-US" id="id_5939046_1284063_2_1">Outstanding amount mortgage loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod" xlink:to="us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1288579_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_5939046_1288579_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279182_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_5939046_1279182_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277532_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_5939046_1277532_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284933_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_5939046_1284933_2_1">Company's consolidated debt</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/2014/elts/us-gaap-2014-01-31.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_5939046_1279211_1_1">Long-term 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_5939046_1279211_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/2014/elts/us-gaap-2014-01-31.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_5939046_1270935_1_1">Long-term 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_5939046_1270935_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-20140930.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_5939046_1293784_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_5939046_1293784_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_5939046_1293784_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-20140930.xsd#omex_MarineServicesProjectsMember" xlink:label="omex_MarineServicesProjectsMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MarineServicesProjectsMember_lbl" xml:lang="en-US" id="id_5939046_1572825_3_1">Marine services projects.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MarineServicesProjectsMember_lbl" xml:lang="en-US" id="id_5939046_1572825_1_1">Marine Services Projects [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MarineServicesProjectsMember_lbl" xml:lang="en-US" id="id_5939046_1572825_2_1">Marine Services Projects [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MarineServicesProjectsMember" xlink:to="omex_MarineServicesProjectsMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_MarketingFeePercentage" xlink:label="omex_MarketingFeePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MarketingFeePercentage_lbl" xml:lang="en-US" id="id_5939046_1600636_3_1">Marketing Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MarketingFeePercentage_lbl" xml:lang="en-US" id="id_5939046_1600636_1_1">Marketing Fee Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MarketingFeePercentage_lbl" xml:lang="en-US" id="id_5939046_1600636_2_1">Marketing program compensation expenses percentage yet to recognize</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MarketingFeePercentage" xlink:to="omex_MarketingFeePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1380227_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_5939046_1380227_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_5939046_1380227_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-20140930.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_5939046_1429839_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_5939046_1429839_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_5939046_1429839_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1275948_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_5939046_1275948_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-20140930.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_5939046_1522998_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_5939046_1522998_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_5939046_1522998_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-20140930.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_5939046_1541060_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_5939046_1541060_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_5939046_1541060_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277596_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_5939046_1277596_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-20140930.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_5939046_1340224_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_5939046_1340224_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_5939046_1340224_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284489_1_1">Stockholders' Equity Attributable to Noncontrolling 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_5939046_1284489_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272650_1_1">Noncontrolling 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_5939046_1272650_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-20140930.xsd#omex_MonacoNotesMember" xlink:label="omex_MonacoNotesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_MonacoNotesMember_lbl" xml:lang="en-US" id="id_5939046_1596109_3_1">Monaco Notes [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_MonacoNotesMember_lbl" xml:lang="en-US" id="id_5939046_1596109_1_1">Monaco Notes [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_MonacoNotesMember_lbl" xml:lang="en-US" id="id_5939046_1596109_2_1">Monaco Notes [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_MonacoNotesMember" xlink:to="omex_MonacoNotesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1485751_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_5939046_1485751_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_5939046_1485751_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-20140930.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_5939046_1338054_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_5939046_1338054_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_5939046_1338054_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-20140930.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_5939046_1328934_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_5939046_1328934_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_5939046_1328934_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-20140930.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_5939046_1351973_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_5939046_1351973_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_5939046_1351973_2_1">Mortgage and loans payable</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1464508_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_5939046_1464508_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_5939046_1464508_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277594_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_5939046_1277594_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/2014/elts/us-gaap-2014-01-31.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_5939046_1269336_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_5939046_1269336_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/2014/elts/us-gaap-2014-01-31.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_5939046_1269340_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_5939046_1269340_2_1">Mortgages 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-20140930.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_5939046_1338463_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_5939046_1338463_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_5939046_1338463_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272678_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_5939046_1272678_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1287111_1_1">Net Cash Provided by (Used in) Financing Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1287111_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_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1275981_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_5939046_1275981_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1287595_1_1">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1287595_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_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1274345_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_5939046_1274345_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1272684_1_1">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="id_5939046_1272684_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_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1284477_1_1">Net Income (Loss) Attributable to Parent</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_5939046_1284477_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_5939046_1284477_6_1">NET (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/2014/elts/us-gaap-2014-01-31.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_5939046_1288604_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_5939046_1288604_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-20140930.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_5939046_1355098_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_5939046_1355098_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/terseLabel" xlink:label="omex_NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted_lbl" xml:lang="en-US" id="id_5939046_1355098_2_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-20140930.xsd#omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage_lbl" xml:lang="en-US" id="id_5939046_1379110_3_1">Net operating loss carried forward available for offsetting against future taxable income percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage_lbl" xml:lang="en-US" id="id_5939046_1379110_1_1">Net Operating Loss Carried Forward Available for Offsetting Against Future Taxable Income Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage_lbl" xml:lang="en-US" id="id_5939046_1379110_2_1">Percentage of NOL that will offset future alternative minimum taxable income, 5 years election</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage" xlink:to="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentage_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal_lbl" xml:lang="en-US" id="id_5939046_1543731_3_1">Net operating loss carried forward available for offsetting against future taxable income percentage as original.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal_lbl" xml:lang="en-US" id="id_5939046_1543731_1_1">Net Operating Loss Carried Forward Available for Offsetting Against Future Taxable Income Percentage as Original</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal_lbl" xml:lang="en-US" id="id_5939046_1543731_2_1">Percentage of NOL that will offset future alternative minimum taxable income, general or 2 years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal" xlink:to="omex_NetOperatingLossCarriedForwardAvailableForOffsettingAgainstFutureTaxableIncomePercentageAsOriginal_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_NetOperatingLossCarryBackPeriodOne" xlink:label="omex_NetOperatingLossCarryBackPeriodOne"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NetOperatingLossCarryBackPeriodOne_lbl" xml:lang="en-US" id="id_5939046_1369398_3_1">Net operating loss carry back period one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NetOperatingLossCarryBackPeriodOne_lbl" xml:lang="en-US" id="id_5939046_1369398_1_1">Net Operating Loss Carry Back Period One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NetOperatingLossCarryBackPeriodOne_lbl" xml:lang="en-US" id="id_5939046_1369398_2_1">Duration of carryback period to 2008 tax year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NetOperatingLossCarryBackPeriodOne" xlink:to="omex_NetOperatingLossCarryBackPeriodOne_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_NetOperatingLossCarryBackPeriodOriginal" xlink:label="omex_NetOperatingLossCarryBackPeriodOriginal"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NetOperatingLossCarryBackPeriodOriginal_lbl" xml:lang="en-US" id="id_5939046_1306529_3_1">Net operating loss carry back period original.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NetOperatingLossCarryBackPeriodOriginal_lbl" xml:lang="en-US" id="id_5939046_1306529_1_1">Net Operating Loss Carry Back Period Original</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NetOperatingLossCarryBackPeriodOriginal_lbl" xml:lang="en-US" id="id_5939046_1306529_2_1">General duration of loss carryback period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NetOperatingLossCarryBackPeriodOriginal" xlink:to="omex_NetOperatingLossCarryBackPeriodOriginal_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1328660_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_5939046_1328660_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_5939046_1328660_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-20140930.xsd#omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment" xlink:label="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_5939046_1360206_3_1">Noncurrent assets excluding property plant and equipment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_5939046_1360206_1_1">Noncurrent Assets Excluding Property Plant And Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_5939046_1360206_6_1">Total non-current assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment" xlink:to="omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1274361_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_5939046_1274361_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NotesPayable" xlink:label="us-gaap_NotesPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US" id="id_5939046_1284024_1_1">Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US" id="id_5939046_1284024_2_1">Carrying value for note payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1530869_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_5939046_1530869_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_5939046_1530869_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-20140930.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_5939046_1569005_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_5939046_1569005_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_5939046_1569005_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-20140930.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_5939046_1513552_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_5939046_1513552_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_5939046_1513552_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-20140930.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_5939046_1326937_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_5939046_1326937_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_5939046_1326937_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-20140930.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_5939046_1355313_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_5939046_1355313_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_5939046_1355313_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="omex-20140930.xsd#omex_NumberOfWhollyOwnedSubsidiaries" xlink:label="omex_NumberOfWhollyOwnedSubsidiaries"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_NumberOfWhollyOwnedSubsidiaries_lbl" xml:lang="en-US" id="id_5939046_1323889_3_1">Number Of Wholly Owned Subsidiaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_NumberOfWhollyOwnedSubsidiaries_lbl" xml:lang="en-US" id="id_5939046_1323889_1_1">Number Of Wholly Owned Subsidiaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_NumberOfWhollyOwnedSubsidiaries_lbl" xml:lang="en-US" id="id_5939046_1323889_2_1">Number of whole owned subsidiaries</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NumberOfWhollyOwnedSubsidiaries" xlink:to="omex_NumberOfWhollyOwnedSubsidiaries_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_OceanicaResourcesMember" xlink:label="omex_OceanicaResourcesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OceanicaResourcesMember_lbl" xml:lang="en-US" id="id_5939046_1596105_3_1">Oceanica resources.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OceanicaResourcesMember_lbl" xml:lang="en-US" id="id_5939046_1596105_1_1">Oceanica Resources [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OceanicaResourcesMember_lbl" xml:lang="en-US" id="id_5939046_1596105_2_1">Oceanica Resources S. de. R.L [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OceanicaResourcesMember" xlink:to="omex_OceanicaResourcesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1285548_1_1">Operating Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US" id="id_5939046_1285548_2_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_5939046_1285548_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279274_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_5939046_1279274_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283121_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_5939046_1283121_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/2014/elts/us-gaap-2014-01-31.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_5939046_1288124_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_5939046_1288124_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-20140930.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_5939046_1452049_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_5939046_1452049_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_5939046_1452049_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-20140930.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_5939046_1469262_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_5939046_1469262_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_5939046_1469262_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-20140930.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_5939046_1309916_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_5939046_1309916_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_5939046_1309916_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1277652_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_5939046_1277652_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="omex-20140930.xsd#omex_OtherAccountsReceivableMember" xlink:label="omex_OtherAccountsReceivableMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_OtherAccountsReceivableMember_lbl" xml:lang="en-US" id="id_5939046_1433641_3_1">Other accounts receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_OtherAccountsReceivableMember_lbl" xml:lang="en-US" id="id_5939046_1433641_1_1">Other Accounts Receivable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_OtherAccountsReceivableMember_lbl" xml:lang="en-US" id="id_5939046_1433641_2_1">Other [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_OtherAccountsReceivableMember" xlink:to="omex_OtherAccountsReceivableMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1288617_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_5939046_1288617_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/2014/elts/us-gaap-2014-01-31.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_5939046_1288618_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_5939046_1288618_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284868_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_5939046_1284868_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284001_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_5939046_1284001_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-20140930.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_5939046_1568834_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_5939046_1568834_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_5939046_1568834_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OwnshareLendingArrangementSharesIssued" xlink:label="us-gaap_OwnshareLendingArrangementSharesIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OwnshareLendingArrangementSharesIssued_lbl" xml:lang="en-US" id="id_5939046_1280943_1_1">Own-share Lending Arrangement, Shares, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OwnshareLendingArrangementSharesIssued_lbl" xml:lang="en-US" id="id_5939046_1280943_2_1">Number of shares issued as collateral</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OwnshareLendingArrangementSharesIssued" xlink:to="us-gaap_OwnshareLendingArrangementSharesIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1434697_3_1">Participation revenue rights 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_5939046_1434697_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_5939046_1434697_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-20140930.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_5939046_1391320_3_1">Participation revenue rights 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_5939046_1391320_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_5939046_1391320_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-20140930.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_5939046_1548271_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_5939046_1548271_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_5939046_1548271_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="omex-20140930.xsd#omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable" xlink:label="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable_lbl" xml:lang="en-US" id="id_5939046_1447659_3_1">Payment restricted cash held as collateral on loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable_lbl" xml:lang="en-US" id="id_5939046_1447659_1_1">Payment Restricted Cash Held as Collateral on Loan Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable_lbl" xml:lang="en-US" id="id_5939046_1447659_14_1">Restricted cash held as collateral on loan payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable" xlink:to="omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1282197_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_5939046_1282197_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283983_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_5939046_1283983_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284422_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_5939046_1284422_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282188_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_5939046_1282188_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284425_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_5939046_1284425_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284434_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_5939046_1284434_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-20140930.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_5939046_1407010_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_5939046_1407010_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_5939046_1407010_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-20140930.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_5939046_1569079_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_5939046_1569079_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_5939046_1569079_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-20140930.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_5939046_1398536_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_5939046_1398536_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_5939046_1398536_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-20140930.xsd#omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo" xlink:label="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo_lbl" xml:lang="en-US" id="id_5939046_1575316_3_1">Percentage of cash proceeds from monetization of recovered cargo.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo_lbl" xml:lang="en-US" id="id_5939046_1575316_1_1">Percentage Of Cash Proceeds From Monetization Of Recovered Cargo</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo_lbl" xml:lang="en-US" id="id_5939046_1575316_2_1">Percentage of cash proceeds from monetization of recovered cargo</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo" xlink:to="omex_PercentageOfCashProceedsFromMonetizationOfRecoveredCargo_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1541849_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_5939046_1541849_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_5939046_1541849_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-20140930.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_5939046_1357646_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_5939046_1357646_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_5939046_1357646_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-20140930.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_5939046_1428385_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_5939046_1428385_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_5939046_1428385_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-20140930.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_5939046_1337909_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_5939046_1337909_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_5939046_1337909_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-20140930.xsd#omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement" xlink:label="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement_lbl" xml:lang="en-US" id="id_5939046_1315909_3_1">Percentage of shares purchased by agent in private placement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement_lbl" xml:lang="en-US" id="id_5939046_1315909_1_1">Percentage Of Shares Purchased By Agent In Private Placement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement_lbl" xml:lang="en-US" id="id_5939046_1315909_2_1">Percentage of shares purchased by private investor</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement" xlink:to="omex_PercentageOfSharesPurchasedByAgentInPrivatePlacement_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_PercentageOfSubsequentCashProceedsAfterReimbursement" xlink:label="omex_PercentageOfSubsequentCashProceedsAfterReimbursement"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_PercentageOfSubsequentCashProceedsAfterReimbursement_lbl" xml:lang="en-US" id="id_5939046_1575462_3_1">Percentage of subsequent cash proceeds after reimbursement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_PercentageOfSubsequentCashProceedsAfterReimbursement_lbl" xml:lang="en-US" id="id_5939046_1575462_1_1">Percentage Of Subsequent Cash Proceeds After Reimbursement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_PercentageOfSubsequentCashProceedsAfterReimbursement_lbl" xml:lang="en-US" id="id_5939046_1575462_2_1">Percentage of subsequent cash proceeds after priority recoupment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_PercentageOfSubsequentCashProceedsAfterReimbursement" xlink:to="omex_PercentageOfSubsequentCashProceedsAfterReimbursement_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1466666_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_5939046_1466666_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_5939046_1466666_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-20140930.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_5939046_1519862_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_5939046_1519862_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_5939046_1519862_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-20140930.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_5939046_1313123_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_5939046_1313123_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_5939046_1313123_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-20140930.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_5939046_1413034_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_5939046_1413034_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_5939046_1413034_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-20140930.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_5939046_1366327_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_5939046_1366327_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_5939046_1366327_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1280976_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_5939046_1280976_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279344_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_5939046_1279344_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/2014/elts/us-gaap-2014-01-31.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_5939046_1280980_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_5939046_1280980_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276106_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_5939046_1276106_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282154_1_1">Preferred Stock, Value, Issued</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_5939046_1282154_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-20140930.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_5939046_1548138_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_5939046_1548138_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_5939046_1548138_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/2014/elts/us-gaap-2014-01-31.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_5939046_1285610_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_5939046_1285610_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/2014/elts/us-gaap-2014-01-31.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_5939046_1287188_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_5939046_1287188_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/2014/elts/us-gaap-2014-01-31.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_5939046_1289189_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_5939046_1289189_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-20140930.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_5939046_1458845_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_5939046_1458845_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_5939046_1458845_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/2014/elts/us-gaap-2014-01-31.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_5939046_1282613_1_1">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</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_5939046_1282613_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_5939046_1282613_6_1">NET (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-20140930.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_5939046_1389867_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_5939046_1389867_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_5939046_1389867_2_1">Project Term Loans [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/2014/elts/us-gaap-2014-01-31.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_5939046_1269502_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_5939046_1269502_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/2014/elts/us-gaap-2014-01-31.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_5939046_1285626_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_5939046_1285626_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276139_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_5939046_1276139_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276143_1_1">Property, Plant and Equipment, Policy [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_5939046_1276143_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276144_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_5939046_1276144_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/2014/elts/us-gaap-2014-01-31.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_5939046_1269523_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_5939046_1269523_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279402_1_1">Range [Domain]</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_5939046_1279402_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281036_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_5939046_1281036_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/2014/elts/us-gaap-2014-01-31.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_5939046_1272871_1_1">Receivable [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_5939046_1272871_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-20140930.xsd#omex_ReceiverMember" xlink:label="omex_ReceiverMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ReceiverMember_lbl" xml:lang="en-US" id="id_5939046_1575461_3_1">Receiver.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ReceiverMember_lbl" xml:lang="en-US" id="id_5939046_1575461_1_1">Receiver [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ReceiverMember_lbl" xml:lang="en-US" id="id_5939046_1575461_2_1">Receiver [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ReceiverMember" xlink:to="omex_ReceiverMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RecoveryOfDirectCosts" xlink:label="us-gaap_RecoveryOfDirectCosts"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RecoveryOfDirectCosts_lbl" xml:lang="en-US" id="id_5939046_1283936_1_1">Recovery of Direct Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RecoveryOfDirectCosts_lbl" xml:lang="en-US" id="id_5939046_1283936_2_1">Recoupment of operations and research costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RecoveryOfDirectCosts" xlink:to="us-gaap_RecoveryOfDirectCosts_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1308550_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_5939046_1308550_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_5939046_1308550_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="us-gaap_RelatedPartyDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyDomain_lbl" xml:lang="en-US" id="id_5939046_1279455_1_1">Related Party [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RelatedPartyDomain_lbl" xml:lang="en-US" id="id_5939046_1279455_2_1">Related Party [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="us-gaap_RelatedPartyDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xml:lang="en-US" id="id_5939046_1279431_1_1">Related Party [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xml:lang="en-US" id="id_5939046_1279431_2_1">Related Party [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1539947_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_5939046_1539947_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_5939046_1539947_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xml:lang="en-US" id="id_5939046_1282130_1_1">Repayments of Long-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xml:lang="en-US" id="id_5939046_1282130_2_1">Received the Second Tranche on this loan facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLongTermDebt" xlink:to="us-gaap_RepaymentsOfLongTermDebt_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfNotesPayable" xlink:label="us-gaap_RepaymentsOfNotesPayable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xml:lang="en-US" id="id_5939046_1284383_1_1">Repayments of Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xml:lang="en-US" id="id_5939046_1284383_2_1">Principal amount of loan, paid in cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfNotesPayable" xlink:to="us-gaap_RepaymentsOfNotesPayable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1552919_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_5939046_1552919_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_5939046_1552919_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276212_1_1">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_5939046_1276212_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentItemPurpose" xlink:label="us-gaap_RestrictedCashAndCashEquivalentItemPurpose"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentItemPurpose_lbl" xml:lang="en-US" id="id_5939046_1279466_1_1">Restricted Cash and Cash Equivalent Item, Purpose</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentItemPurpose_lbl" xml:lang="en-US" id="id_5939046_1279466_2_1">Restricted cash purpose</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentItemPurpose" xlink:to="us-gaap_RestrictedCashAndCashEquivalentItemPurpose_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1286186_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_5939046_1286186_2_1">Restricted cash</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/2014/elts/us-gaap-2014-01-31.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_5939046_1285658_1_1">Restricted Cash and Cash Equivalents, Current</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_5939046_1285658_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277822_1_1">Restricted 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_5939046_1277822_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277823_1_1">Cash and Cash Equivalents [Domain]</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_5939046_1277823_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276224_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_5939046_1276224_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndInvestments" xlink:label="us-gaap_RestrictedCashAndInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndInvestments_lbl" xml:lang="en-US" id="id_5939046_1285659_1_1">Restricted Cash and Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndInvestments_lbl" xml:lang="en-US" id="id_5939046_1285659_2_1">Restricted cash deposit</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndInvestments" xlink:to="us-gaap_RestrictedCashAndInvestments_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1271210_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_5939046_1271210_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/2014/elts/us-gaap-2014-01-31.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_5939046_1271212_1_1">Restricted Stock Units (RSUs) [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_5939046_1271212_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/2014/elts/us-gaap-2014-01-31.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_5939046_1288735_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_5939046_1288735_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/2014/elts/us-gaap-2014-01-31.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_5939046_1289256_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_5939046_1289256_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/2014/elts/us-gaap-2014-01-31.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_5939046_1283021_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_5939046_1283021_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-20140930.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_5939046_1544871_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_5939046_1544871_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_5939046_1544871_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-20140930.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_5939046_1326340_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_5939046_1326340_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_5939046_1326340_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-20140930.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_5939046_1451990_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_5939046_1451990_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_5939046_1451990_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1272964_1_1">Revenue Recognition, Policy [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_5939046_1272964_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/2014/elts/us-gaap-2014-01-31.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_5939046_1284373_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_5939046_1284373_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/2014/elts/us-gaap-2014-01-31.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_5939046_1271283_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_5939046_1271283_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-20140930.xsd#omex_ReversalOfAlternativeMinimumTaxMember" xlink:label="omex_ReversalOfAlternativeMinimumTaxMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ReversalOfAlternativeMinimumTaxMember_lbl" xml:lang="en-US" id="id_5939046_1575514_3_1">Reversal Of Alternative Minimum Tax [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ReversalOfAlternativeMinimumTaxMember_lbl" xml:lang="en-US" id="id_5939046_1575514_1_1">Reversal Of Alternative Minimum Tax [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ReversalOfAlternativeMinimumTaxMember_lbl" xml:lang="en-US" id="id_5939046_1575514_2_1">Reversal of AMT [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ReversalOfAlternativeMinimumTaxMember" xlink:to="omex_ReversalOfAlternativeMinimumTaxMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_ReversalOfBadDebtProvision" xlink:label="omex_ReversalOfBadDebtProvision"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ReversalOfBadDebtProvision_lbl" xml:lang="en-US" id="id_5939046_1575261_3_1">Reversal Of Bad Debt Provision</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ReversalOfBadDebtProvision_lbl" xml:lang="en-US" id="id_5939046_1575261_1_1">Reversal Of Bad Debt Provision</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="omex_ReversalOfBadDebtProvision_lbl" xml:lang="en-US" id="id_5939046_1575261_14_1">Reversal of bad debt provision</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ReversalOfBadDebtProvision" xlink:to="omex_ReversalOfBadDebtProvision_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xml:lang="en-US" id="id_5939046_1281089_1_1">Revolving Credit Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xml:lang="en-US" id="id_5939046_1281089_2_1">Revolving Credit Facility [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevolvingCreditFacilityMember" xlink:to="us-gaap_RevolvingCreditFacilityMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1317805_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_5939046_1317805_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_5939046_1317805_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277880_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_5939046_1277880_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedPerTransaction" xlink:label="us-gaap_SaleOfStockConsiderationReceivedPerTransaction"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockConsiderationReceivedPerTransaction_lbl" xml:lang="en-US" id="id_5939046_1288740_1_1">Sale of Stock, Consideration Received Per Transaction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockConsiderationReceivedPerTransaction_lbl" xml:lang="en-US" id="id_5939046_1288740_2_1">Number shares issued to lender, value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockConsiderationReceivedPerTransaction" xlink:to="us-gaap_SaleOfStockConsiderationReceivedPerTransaction_lbl"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl" xml:lang="en-US" id="id_5939046_1271271_2_1">Schedule of Restricted Cash and Cash Equivalents [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:to="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_ScheduleOfRevenueParticipationRightsTableTextBlock" xlink:label="omex_ScheduleOfRevenueParticipationRightsTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ScheduleOfRevenueParticipationRightsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1339695_3_1">Schedule of revenue participation rights.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ScheduleOfRevenueParticipationRightsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1339695_1_1">Schedule Of Revenue Participation Rights Table [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ScheduleOfRevenueParticipationRightsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1339695_2_1">Participating Revenue Rights</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTableTextBlock" xlink:label="omex_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTableTextBlock"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1498117_3_1">Schedule of share based compensation arrangement by share based payment award fair value assumptions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1498117_1_1">Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Table [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_5939046_1498117_2_1">Significant Assumptions Utilized in Valuation Technique</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <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_5939046_1271276_1_1">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_5939046_1271276_2_1">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="us-gaap_ScheduleOfShortTermDebtTable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShortTermDebtTable_lbl" xml:lang="en-US" id="id_5939046_1274653_1_1">Schedule of Short-term Debt [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShortTermDebtTable_lbl" xml:lang="en-US" id="id_5939046_1274653_2_1">Schedule of Short-term Debt [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShortTermDebtTable" xlink:to="us-gaap_ScheduleOfShortTermDebtTable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1405174_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_5939046_1405174_1_1">Secured Collateral</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SecuredCollateral_lbl" xml:lang="en-US" id="id_5939046_1405174_2_1">Secured collateral</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SecuredCollateral" xlink:to="omex_SecuredCollateral_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1285681_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_5939046_1285681_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-20140930.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_5939046_1501032_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_5939046_1501032_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_5939046_1501032_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-20140930.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_5939046_1331799_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_5939046_1331799_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_5939046_1331799_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-20140930.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_5939046_1378570_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_5939046_1378570_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_5939046_1378570_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="us-gaap_SeriesAPreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xml:lang="en-US" id="id_5939046_1269676_1_1">Series A Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeriesAPreferredStockMember_lbl" xml:lang="en-US" id="id_5939046_1269676_2_1">Series A Preferred Stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesAPreferredStockMember" xlink:to="us-gaap_SeriesAPreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1281158_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_5939046_1281158_2_1">Series D Convertible Preferred Stock [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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1269677_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_5939046_1269677_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-20140930.xsd#omex_SeriesOneVotingSharesMember" xlink:label="omex_SeriesOneVotingSharesMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SeriesOneVotingSharesMember_lbl" xml:lang="en-US" id="id_5939046_1590825_3_1">Series One Voting Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SeriesOneVotingSharesMember_lbl" xml:lang="en-US" id="id_5939046_1590825_1_1">Series One Voting Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SeriesOneVotingSharesMember_lbl" xml:lang="en-US" id="id_5939046_1590825_2_1">Series A Voting Shares [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SeriesOneVotingSharesMember" xlink:to="omex_SeriesOneVotingSharesMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1538128_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_5939046_1538128_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_5939046_1538128_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/2014/elts/us-gaap-2014-01-31.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_5939046_1288753_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_5939046_1288753_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-20140930.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_5939046_1305083_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_5939046_1305083_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_5939046_1305083_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/2014/elts/us-gaap-2014-01-31.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_5939046_1273027_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_5939046_1273027_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/2014/elts/us-gaap-2014-01-31.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_5939046_1269692_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_5939046_1269692_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276359_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_5939046_1276359_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="omex-20140930.xsd#omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued_lbl" xml:lang="en-US" id="id_5939046_1357735_3_1">Share Based Compensation Arrangement By Share Based Payment Award Options Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued_lbl" xml:lang="en-US" id="id_5939046_1357735_1_1">Share Based Compensation Arrangement By Share Based Payment Award Options Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued_lbl" xml:lang="en-US" id="id_5939046_1357735_2_1">Stock option, issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued" xlink:to="omex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsIssued_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1274694_1_1">Share-based Compensation Arrangement by Share-based 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_5939046_1274694_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/2014/elts/us-gaap-2014-01-31.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_5939046_1274697_1_1">Equity Award [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_5939046_1274697_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1281187_1_1">Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]</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_5939046_1281187_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/2014/elts/us-gaap-2014-01-31.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_5939046_1273051_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_5939046_1273051_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-20140930.xsd#omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable" xlink:label="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable_lbl" xml:lang="en-US" id="id_5939046_1414232_3_1">Shares issued in connection with settlement of accounts receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable_lbl" xml:lang="en-US" id="id_5939046_1414232_1_1">Shares Issued In Connection With Settlement Of Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable_lbl" xml:lang="en-US" id="id_5939046_1414232_2_1">Settlement of accounts receivable, share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable" xlink:to="omex_SharesIssuedInConnectionWithSettlementOfAccountsReceivable_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1510891_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_5939046_1510891_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_5939046_1510891_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-20140930.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_5939046_1497722_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_5939046_1497722_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_5939046_1497722_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-20140930.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_5939046_1489004_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_5939046_1489004_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_5939046_1489004_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-20140930.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_5939046_1307265_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_5939046_1307265_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_5939046_1307265_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/2014/elts/us-gaap-2014-01-31.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_5939046_1271348_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_5939046_1271348_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281195_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_5939046_1281195_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281196_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_5939046_1281196_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-20140930.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_5939046_1292514_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_5939046_1292514_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_5939046_1292514_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/2014/elts/us-gaap-2014-01-31.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_5939046_1277972_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_5939046_1277972_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-20140930.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_5939046_1440131_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_5939046_1440131_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_5939046_1440131_2_1">SMM Project, LLC [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_SmmProjectLimitedLiabilityCompanyMember" xlink:to="omex_SmmProjectLimitedLiabilityCompanyMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1306471_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_5939046_1306471_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_5939046_1306471_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276400_1_1">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_5939046_1276400_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" id="id_5939046_1276401_1_1">Equity Components [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" id="id_5939046_1276401_2_1">Equity Components [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1279599_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_5939046_1279599_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/2014/elts/us-gaap-2014-01-31.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_5939046_1281214_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_5939046_1281214_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/2014/elts/us-gaap-2014-01-31.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_5939046_1271363_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_5939046_1271363_2_1">Statement of Financial Position [Abstract]</label>
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    <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_5939046_1274733_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_5939046_1274733_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1283431_1_1">Stockholders' Equity Attributable to Parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US" id="id_5939046_1283431_6_1">Total stockholders' equity</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/2014/elts/us-gaap-2014-01-31.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_5939046_1276413_1_1">Stockholders' Equity Attributable to Parent [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_5939046_1276413_2_1">STOCKHOLDERS' EQUITY</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/2014/elts/us-gaap-2014-01-31.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_5939046_1281595_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_5939046_1281595_6_1">Total stockholders' equity before non-controlling interest</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/2014/elts/us-gaap-2014-01-31.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_5939046_1276414_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_5939046_1276414_2_1">Stockholders' Equity</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/2014/elts/us-gaap-2014-01-31.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_5939046_1277993_1_1">Stockholders' Equity Note, Redeemable Preferred Stock, Issue, Policy [Policy Text Block]</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_5939046_1277993_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1279601_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_5939046_1279601_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockOptionMember" xlink:label="us-gaap_StockOptionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockOptionMember_lbl" xml:lang="en-US" id="id_5939046_1281225_1_1">Equity Option [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockOptionMember_lbl" xml:lang="en-US" id="id_5939046_1281225_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_StockOptionMember" xlink:to="us-gaap_StockOptionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1472135_3_1">Stock option exercise price ten.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1472135_1_1">Stock Options With Exercise Price of Five Point Zero Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1472135_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_StockOptionsWithExercisePriceOfFivePointZeroZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfFivePointZeroZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1453694_3_1">Stock options exercise price nine.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1453694_1_1">Stock Options With Exercise Price of Four Point Zero Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1453694_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_StockOptionsWithExercisePriceOfFourPointZeroZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfFourPointZeroZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember" xlink:label="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1596011_3_1">Stock options with exercise price of one point seven four.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1596011_1_1">Stock Options With Exercise Price Of One Point Seven Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1596011_2_1">Stock Options With an Exercise Price of $1.74 per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember" xlink:to="omex_StockOptionsWithExercisePriceOfOnePointSevenFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1467118_3_1">Stock option exercise price eleven.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1467118_1_1">Stock Options With Exercise Price of Seven Point Zero Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember_lbl" xml:lang="en-US" id="id_5939046_1467118_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_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfSevenPointZeroZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember_lbl" xml:lang="en-US" id="id_5939046_1346120_3_1">Stock options exercise price six.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember_lbl" xml:lang="en-US" id="id_5939046_1346120_1_1">Stock Options With Exercise Price of Three Point Five One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember_lbl" xml:lang="en-US" id="id_5939046_1346120_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_StockOptionsWithExercisePriceOfThreePointFiveOneMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointFiveOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember_lbl" xml:lang="en-US" id="id_5939046_1478642_3_1">Stock options exercise price seven.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember_lbl" xml:lang="en-US" id="id_5939046_1478642_1_1">Stock Options With Exercise Price of Three Point Five Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember_lbl" xml:lang="en-US" id="id_5939046_1478642_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_StockOptionsWithExercisePriceOfThreePointFiveThreeMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointFiveThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember_lbl" xml:lang="en-US" id="id_5939046_1498936_3_1">Stock options exercise price five.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember_lbl" xml:lang="en-US" id="id_5939046_1498936_1_1">Stock Options With Exercise Price of Three Point Five Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember_lbl" xml:lang="en-US" id="id_5939046_1498936_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_StockOptionsWithExercisePriceOfThreePointFiveZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointFiveZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember_lbl" xml:lang="en-US" id="id_5939046_1460774_3_1">Stock options exercise price four.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember_lbl" xml:lang="en-US" id="id_5939046_1460774_1_1">Stock Options With Exercise Price of Three Point Four Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember_lbl" xml:lang="en-US" id="id_5939046_1460774_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_StockOptionsWithExercisePriceOfThreePointFourThreeMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointFourThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember_lbl" xml:lang="en-US" id="id_5939046_1351076_3_1">Stock options exercise price three.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember_lbl" xml:lang="en-US" id="id_5939046_1351076_1_1">Stock Options With Exercise Price of Three Point Four Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember_lbl" xml:lang="en-US" id="id_5939046_1351076_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_StockOptionsWithExercisePriceOfThreePointFourZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointFourZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember_lbl" xml:lang="en-US" id="id_5939046_1334356_3_1">Stock options exercise price eight.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember_lbl" xml:lang="en-US" id="id_5939046_1334356_1_1">Stock Options With Exercise Price of Three Point Nine Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember_lbl" xml:lang="en-US" id="id_5939046_1334356_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_StockOptionsWithExercisePriceOfThreePointNineZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointNineZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember_lbl" xml:lang="en-US" id="id_5939046_1470861_3_1">Stock options exercised price one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember_lbl" xml:lang="en-US" id="id_5939046_1470861_1_1">Stock Options With Exercise Price of Three Point Two Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember_lbl" xml:lang="en-US" id="id_5939046_1470861_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_StockOptionsWithExercisePriceOfThreePointTwoFiveMember" xlink:to="omex_StockOptionsWithExercisePriceOfThreePointTwoFiveMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember_lbl" xml:lang="en-US" id="id_5939046_1341095_3_1">Stock options with exercise price of two point eight nine.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember_lbl" xml:lang="en-US" id="id_5939046_1341095_1_1">Stock Options With Exercise Price Of Two Point Eight Nine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember_lbl" xml:lang="en-US" id="id_5939046_1341095_2_1">Stock Options With an Exercise Price of $2.89 per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember" xlink:to="omex_StockOptionsWithExercisePriceOfTwoPointEightNineMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1501294_3_1">Stock options with exercise price of two point seven four.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1501294_1_1">Stock Options With Exercise Price Of Two Point Seven Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember_lbl" xml:lang="en-US" id="id_5939046_1501294_2_1">Stock Options With an Exercise Price of $2.74 per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember" xlink:to="omex_StockOptionsWithExercisePriceOfTwoPointSevenFourMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember_lbl" xml:lang="en-US" id="id_5939046_1455919_3_1">Stock options with exercise price of two point seven three.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember_lbl" xml:lang="en-US" id="id_5939046_1455919_1_1">Stock Options With Exercise Price Of Two Point Seven Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember_lbl" xml:lang="en-US" id="id_5939046_1455919_2_1">Stock Options With an Exercise Price of $2.73 per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember" xlink:to="omex_StockOptionsWithExercisePriceOfTwoPointSevenThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember_lbl" xml:lang="en-US" id="id_5939046_1596017_3_1">Stock options with exercise price of two point two zero.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember_lbl" xml:lang="en-US" id="id_5939046_1596017_1_1">Stock Options With Exercise Price Of Two Point Two Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember_lbl" xml:lang="en-US" id="id_5939046_1596017_2_1">Stock Options With an Exercise Price of $2.20 per Share [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember" xlink:to="omex_StockOptionsWithExercisePriceOfTwoPointTwoZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1273350_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_5939046_1273350_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/2014/elts/us-gaap-2014-01-31.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_5939046_1279607_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_5939046_1279607_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="us-gaap_SubsequentEventTypeAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_5939046_1271378_1_1">Subsequent Event Type [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xml:lang="en-US" id="id_5939046_1271378_2_1">Subsequent Event Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="us-gaap_SubsequentEventTypeDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_5939046_1276407_1_1">Subsequent Event Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xml:lang="en-US" id="id_5939046_1276407_2_1">Subsequent Event Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1271384_1_1">Summary of Valuation Allowance [Table 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_5939046_1271384_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/2014/elts/us-gaap-2014-01-31.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_5939046_1271385_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_5939046_1271385_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TaxCreditCarryforwardAxis" xlink:label="us-gaap_TaxCreditCarryforwardAxis"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxCreditCarryforwardAxis_lbl" xml:lang="en-US" id="id_5939046_1274765_1_1">Tax Credit Carryforward [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TaxCreditCarryforwardAxis_lbl" xml:lang="en-US" id="id_5939046_1274765_2_1">Tax Credit Carryforward [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxCreditCarryforwardAxis" xlink:to="us-gaap_TaxCreditCarryforwardAxis_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain" xlink:label="us-gaap_TaxCreditCarryforwardNameDomain"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TaxCreditCarryforwardNameDomain_lbl" xml:lang="en-US" id="id_5939046_1276427_1_1">Tax Credit Carryforward, Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TaxCreditCarryforwardNameDomain_lbl" xml:lang="en-US" id="id_5939046_1276427_2_1">Tax Credit Carryforward, Name [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxCreditCarryforwardNameDomain" xlink:to="us-gaap_TaxCreditCarryforwardNameDomain_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1562877_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_5939046_1562877_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_5939046_1562877_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276429_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_5939046_1276429_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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TradeAccountsReceivableMember" xlink:label="us-gaap_TradeAccountsReceivableMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TradeAccountsReceivableMember_lbl" xml:lang="en-US" id="id_5939046_1279898_1_1">Trade Accounts Receivable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TradeAccountsReceivableMember_lbl" xml:lang="en-US" id="id_5939046_1279898_2_1">Trade [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradeAccountsReceivableMember" xlink:to="us-gaap_TradeAccountsReceivableMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_5939046_1269880_1_1">Trading Symbol</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_5939046_1269880_2_1">Trading Symbol</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_TrancheOneMember" xlink:label="omex_TrancheOneMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TrancheOneMember_lbl" xml:lang="en-US" id="id_5939046_1574488_3_1">Tranche One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TrancheOneMember_lbl" xml:lang="en-US" id="id_5939046_1574488_1_1">Tranche One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TrancheOneMember_lbl" xml:lang="en-US" id="id_5939046_1574488_2_1">First Tranche [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TrancheOneMember" xlink:to="omex_TrancheOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_TrancheThreeMember" xlink:label="omex_TrancheThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TrancheThreeMember_lbl" xml:lang="en-US" id="id_5939046_1577234_3_1">Tranche Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TrancheThreeMember_lbl" xml:lang="en-US" id="id_5939046_1577234_1_1">Tranche Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TrancheThreeMember_lbl" xml:lang="en-US" id="id_5939046_1577234_2_1">Third Tranche [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TrancheThreeMember" xlink:to="omex_TrancheThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_TrancheTwoMember" xlink:label="omex_TrancheTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TrancheTwoMember_lbl" xml:lang="en-US" id="id_5939046_1574489_3_1">Tranche Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TrancheTwoMember_lbl" xml:lang="en-US" id="id_5939046_1574489_1_1">Tranche Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TrancheTwoMember_lbl" xml:lang="en-US" id="id_5939046_1574489_2_1">Second Tranche [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TrancheTwoMember" xlink:to="omex_TrancheTwoMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TransferToInvestments" xlink:label="us-gaap_TransferToInvestments"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TransferToInvestments_lbl" xml:lang="en-US" id="id_5939046_1285707_1_1">Transfer to Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TransferToInvestments_lbl" xml:lang="en-US" id="id_5939046_1285707_2_1">Investment in unconsolidated entity per debt conversion into entity shares (See NOTE F)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransferToInvestments" xlink:to="us-gaap_TransferToInvestments_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_TwoZeroOneFourSharePurchaseOptionMember" xlink:label="omex_TwoZeroOneFourSharePurchaseOptionMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_TwoZeroOneFourSharePurchaseOptionMember_lbl" xml:lang="en-US" id="id_5939046_1600577_3_1">Two zero one four share purchase option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_TwoZeroOneFourSharePurchaseOptionMember_lbl" xml:lang="en-US" id="id_5939046_1600577_1_1">Two Zero One Four Share Purchase Option[Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_TwoZeroOneFourSharePurchaseOptionMember_lbl" xml:lang="en-US" id="id_5939046_1600577_2_1">2014 Share Purchase Option [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_TwoZeroOneFourSharePurchaseOptionMember" xlink:to="omex_TwoZeroOneFourSharePurchaseOptionMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1274809_1_1">Use of Estimates, Policy [Policy Text Block]</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_5939046_1274809_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/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ValuationAndQualifyingAccountsAbstract_lbl" xml:lang="en-US" id="id_5939046_1281533_2_1">Valuation and Qualifying Accounts [Abstract]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantAndSharePurchaseOptionDerivativesMember_lbl" xml:lang="en-US" id="id_5939046_1600576_3_1">Warrant and share purchase option derivatives.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantDerivativeMember_lbl" xml:lang="en-US" id="id_5939046_1385462_3_1">Warrant derivative.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantDerivativeMember_lbl" xml:lang="en-US" id="id_5939046_1385462_2_1">Warrant Derivatives [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantGroupOneMember_lbl" xml:lang="en-US" id="id_5939046_1590873_3_1">Warrant Group One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantGroupOneMember_lbl" xml:lang="en-US" id="id_5939046_1590873_1_1">Warrant Group One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantGroupOneMember_lbl" xml:lang="en-US" id="id_5939046_1590873_2_1">Warrant Group 1 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantGroupOneMember" xlink:to="omex_WarrantGroupOneMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_WarrantGroupThreeMember" xlink:label="omex_WarrantGroupThreeMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantGroupThreeMember_lbl" xml:lang="en-US" id="id_5939046_1590877_3_1">Warrant Group Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantGroupThreeMember_lbl" xml:lang="en-US" id="id_5939046_1590877_1_1">Warrant Group Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantGroupThreeMember_lbl" xml:lang="en-US" id="id_5939046_1590877_2_1">Warrant Group 3 [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantGroupThreeMember" xlink:to="omex_WarrantGroupThreeMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_WarrantGroupTwoMember" xlink:label="omex_WarrantGroupTwoMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantGroupTwoMember_lbl" xml:lang="en-US" id="id_5939046_1590875_3_1">Warrant Group Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantGroupTwoMember_lbl" xml:lang="en-US" id="id_5939046_1590875_1_1">Warrant Group Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantGroupTwoMember_lbl" xml:lang="en-US" id="id_5939046_1590875_2_1">Warrant Group 2 [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1273442_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_5939046_1273442_2_1">Warrants [Member]</label>
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    <loc xlink:type="locator" xlink:href="omex-20140930.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_5939046_1372423_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_5939046_1372423_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_5939046_1372423_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-20140930.xsd#omex_WarrantsAttachedToSeniorConvertibleDebtMember" xlink:label="omex_WarrantsAttachedToSeniorConvertibleDebtMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsAttachedToSeniorConvertibleDebtMember_lbl" xml:lang="en-US" id="id_5939046_1526397_3_1">Warrants Attached To Senior Convertible Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsAttachedToSeniorConvertibleDebtMember_lbl" xml:lang="en-US" id="id_5939046_1526397_1_1">Warrants Attached To Senior Convertible Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsAttachedToSeniorConvertibleDebtMember_lbl" xml:lang="en-US" id="id_5939046_1526397_2_1">Warrants Attached to Senior Convertible Debt [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantsAttachedToSeniorConvertibleDebtMember" xlink:to="omex_WarrantsAttachedToSeniorConvertibleDebtMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_WarrantsAttachedToSeriesGPreferredStockMember" xlink:label="omex_WarrantsAttachedToSeriesGPreferredStockMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsAttachedToSeriesGPreferredStockMember_lbl" xml:lang="en-US" id="id_5939046_1332683_3_1">Warrants Attached To Series G Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsAttachedToSeriesGPreferredStockMember_lbl" xml:lang="en-US" id="id_5939046_1332683_1_1">Warrants Attached To Series G Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsAttachedToSeriesGPreferredStockMember_lbl" xml:lang="en-US" id="id_5939046_1332683_2_1">Warrants Attached to Series G Preferred Stock [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_WarrantsAttachedToSeriesGPreferredStockMember" xlink:to="omex_WarrantsAttachedToSeriesGPreferredStockMember_lbl"/>
    <loc xlink:type="locator" xlink:href="omex-20140930.xsd#omex_WarrantsWithExercisePriceOfThreePointSixZeroMember" xlink:label="omex_WarrantsWithExercisePriceOfThreePointSixZeroMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WarrantsWithExercisePriceOfThreePointSixZeroMember_lbl" xml:lang="en-US" id="id_5939046_1375756_3_1">Warrants exercise price three.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WarrantsWithExercisePriceOfThreePointSixZeroMember_lbl" xml:lang="en-US" id="id_5939046_1375756_1_1">Warrants With Exercise Price of Three Point Six Zero [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="omex_WarrantsWithExercisePriceOfThreePointSixZeroMember_lbl" xml:lang="en-US" id="id_5939046_1375756_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_WarrantsWithExercisePriceOfThreePointSixZeroMember" xlink:to="omex_WarrantsWithExercisePriceOfThreePointSixZeroMember_lbl"/>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.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_5939046_1279615_1_1">Incremental Weighted Average Shares Attributable to Dilutive Effect [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_5939046_1279615_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/2014/elts/us-gaap-2014-01-31.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_5939046_1276710_1_1">Weighted Average Number of Shares Outstanding, Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_5939046_1276710_32_1">Weighted average number of common 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_5939046_1276710_2_1">Diluted</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_5939046_1276710_12_1">Shares used in computing diluted net income per share</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="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="id_5939046_1274824_1_1">Weighted Average Number of Shares Outstanding, Diluted [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="id_5939046_1274824_2_1">Denominator:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="id_5939046_1274824_12_1">Weighted average number of common shares outstanding with participating securities per the two-class method</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_5939046_1281555_1_1">Weighted Average Number of Shares Outstanding, Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_5939046_1281555_2_1">Basic</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_lbl" xml:lang="en-US" id="id_5939046_1278047_2_1">Shares used in computation - basic:</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="omex_WeightOfSilverBullionRecovered_lbl" xml:lang="en-US" id="id_5939046_1294961_3_1">Weight of silver bullion recovered.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="omex_WeightOfSilverBullionRecovered_lbl" xml:lang="en-US" id="id_5939046_1294961_1_1">Weight Of Silver Bullion Recovered</label>
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