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Consolidated Statements of Operations - Unaudited - USD ($)
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
REVENUE    
Recovered cargo sales and other $ 15,738  
Expedition 495,997 $ 649,353
Total revenue 511,735 649,353
OPERATING EXPENSES    
Marketing, general and administrative 1,448,207 1,629,955
Operations and research 1,020,768 1,302,516
Total operating expenses 2,468,975 2,932,471
INCOME (LOSS) FROM OPERATIONS (1,957,240) (2,283,118)
OTHER INCOME (EXPENSE)    
Interest expense (710,490) (714,896)
Other 26,346 39,663
Total other income (expense) (684,144) (675,233)
(LOSS) BEFORE INCOME TAXES (2,641,384) (2,958,351)
Income tax benefit (provision) 0 0
NET (LOSS) BEFORE NON-CONTROLLING INTEREST (2,641,384) (2,958,351)
Non-controlling interest 896,622 759,088
NET (LOSS) $ (1,744,762) $ (2,199,263)
Basic and diluted (See NOTE B) $ (0.21) $ (0.28)
Weighted average number of common shares outstanding    
Basic 8,466,909 7,718,366
Diluted 8,466,909 7,718,366