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Investment In Unconsolidated Entities - Schedule of Financial Information (Detail) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]      
Revenue $ 135,000 $ 203,064  
Net income (loss) attributable to Odyssey Marine Exploration, Inc. 2,241,570 3,498,024  
Total Assets 15,825,320   $ 18,491,890
Total Liabilities 95,268,877   $ 97,575,061
Ocean Minerals, LLC [Member]      
Schedule of Equity Method Investments [Line Items]      
Revenue 373,698 46,838  
General expenses (743,425) (581,098)  
Payroll expenses (601,720) (613,947)  
Net income (loss) attributable to Odyssey Marine Exploration, Inc. (1,682,685) (1,808,198)  
Total Assets 36,919,969 37,328,006  
Total Liabilities $ 14,952,415 $ 11,329,642