What is the status of sharks around the world?
What is the status of sharks around the world? I see occasional stories about sharks attacking humans, but on balance aren’t we a lot more brutal to them then they are to us?
—Polly Hitschler, Radnor, PA
It’s true that humans do a lot more damage to shark populations than vice versa. Marine biologists report that sharks are in rapid decline around the world. In the North Atlantic Ocean, shark populations have declined more than 50 percent over the past 20 years alone, with some species now nearing extinction.
Experts see the primary cause as overfishing, which depletes sharks as well as their prey. Sharks are especially vulnerable to illegal “longlines” (fishing nets strung across dozens if not hundreds of miles of ocean), where they get inadvertently snared along with the tuna and swordfish fishermen intend to catch.
Rising demand for shark fin soup in is also contributing to the demise of sharks. According to a report by Wildaid, shark fins are among the most expensive seafood products in the world, selling for some $700 per kilogram on the Hong Kong market. With prices like that, many longline fishermen, who are already operating illegally, are happy to augment their incomes by “finning” a few sharks along the way. (Finning is the practice of removing a fin from a shark and discarding the rest of the carcass at sea.)