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Only 10 percent of all large fish—both open ocean species including tuna, swordfish, marlin and the large groundfish such as cod, halibut, skates and flounder—are left in the sea, according to research published in today's issue of the scientific journal Nature.
"From giant blue marlin to mighty bluefin tuna, and from tropical groupers to Antarctic cod, industrial fishing has scoured the global ocean. There is no blue frontier left," said lead author Ransom Myers, a fisheries biologist based at Dalhousie University in Canada. "Since 1950, with the onset of industrialized fisheries, we have rapidly reduced the resource base to less than 10 percent—not just in some areas, not just for some stocks, but for entire communities of these large fish species from the tropics to the poles."