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Investment In Unconsolidated Entities - Schedule of Financial Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]          
Revenue $ 135,000 $ 215,565 $ 270,000 $ 418,629  
Net (loss) income attributable to Odyssey Marine Exploration, Inc. (14,847,963) (1,527,103) (12,606,393) 1,970,921  
Total Assets 16,572,064   16,572,064   $ 18,491,890
Total Liabilities 106,837,978   106,837,978   97,575,061
Ocean Minerals, LLC [Member]          
Schedule of Equity Method Investments [Line Items]          
Revenue 32,151 4,132,817 405,849 4,179,655  
General expenses (307,183) (1,492,410) (1,050,608) (2,073,508)  
Payroll expenses (602,563) (605,677) (1,204,283) (1,219,624)  
Net (loss) income attributable to Odyssey Marine Exploration, Inc. (2,750,783) $ 885,113 (4,433,468) $ (923,085)  
Total Assets 33,986,660   33,986,660   37,328,006
Total Liabilities $ 11,951,912   $ 11,951,912   $ 11,329,642