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While hunting, white marlin sometimes stun or kill their prey by spearing or slashing it with their sharp bills. Yet in an all-too-familiar tale for imperiled species worldwide, the hunter often becomes the hunted. Globally, predatory fish populations have dwindled in large part due to commercial and recreational overfishing. One of the most threatened of these is the solitary Atlantic white marlin, which continues to swim toward extinction.

ENDANGERED SPECIES ACT PROFILE

PROTECTION STATUS: Not listed

PETITIONED: 2001 (Biodiversity Legal Foundation)

RANGE: Throughout the Atlantic Ocean from Nova Scotia to Argentina and southern Europe to South Africa

THREATS: Commercial and recreational fishing

POPULATION TREND: The Atlantic white marlin has been reduced to less than 10 percent of its historic numbers in the Atlantic Ocean. The species has steadily declined by 3 percent each year since monitoring began in the mid-1980s.

SAVING THE ATLANTIC WHITE MARLIN

National Marine Fisheries Service scientists determined years ago that harvest levels of Atlantic white marlin were unsustainable and that, even under the best of circumstances, the species would continue to decline. Ignoring science as well as the law, the Service refused to list the fish as endangered when prompted by a citizen petition by the Biodiversity Legal Foundation (later absorbed by the Center) in 2001.

Commercial fishing, in the form of longlines, gillnets, and purse seines, is not just bad for the white marlin but is wiping out endangered sea turtles, sea birds, and marine mammals throughout the world’s oceans.

The Center filed a lawsuit seeking to overturn the Service’s decision not to afford Endangered Species Act protections to the white marlin. We ultimately want the agency to close important marlin spawning and feeding grounds to longline fishing. A new status review of the species was expected to be completed by the end of 2007 to determine whether the marlin warrants full legal protections.

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Contact: Brendan Cummings

Photo © Bill Boyce