1. How much bycatch in this population is too much?

2. And that is, in essence, what bycatch is.

3. Bycatch was not confined to drift-netting.

4. "Bycatch is probably the most important threat to sea turtles," says Karen Bjorndal, a sea turtle ecologist at the University of Florida, Gainesville, who was not involved in the research.

5. "Small-scale fisheries are woefully underreported for bycatch," he notes, especially in the eastern Indian Ocean and off West Africa.

6. In fact bycatch reduction is a major requirement of the Magnuson - Stevens Fishery Conservation and Management Act.

7. Bycatch must not be discarded. Instead it must be landed and recorded as part of that boat’s quota.

8. Smaller studies have shown that this so-called bycatch can kill large numbers of turtles—in Baja California,() for example.

9. Ultimately, she said, the goal is to reduce bycatch, in order to make sure that there's fish to catch in the future.

10. Rebecca Lewison: Bycatch of these large marine organisms is just another indicator that we are fishing unsustainably.

11. “But despite these successes,” he warns, “there remain real concerns about high levels of bycatch and the reasons behind them.

12. She says the future health of the ocean depends on fishing less, reducingwastfulwasteful bycatch, and taking action on multiple threats to marine ecosystems.

13. The numbers of fish and other ocean life have dropped dramatically in the past few decades. That's because of commercial overfishing, and something called bycatch.

14. Prof Peter Ryan from the Percy FitzPatrick Institute at the University of Cape Town, has been actively engaged in seabird conservation, including fishery bycatch, for more than a decade.

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15. Thousands of small fish are thrown back into the sea as bycatch.

16. Found at depths of between 984 and 4, 921 feet (300 and 1, 500 meters), the deep-sea sharks that produce squalene are most frequently caught via bottom trawling, either deliberately or as bycatch.

17. The Eliminator," a fishing net, was a winner in 2007, designed to reduce bycatch of cod in the haddock fishery.

18. From the viewpoint of resource management, it should reduce the phenomenon of increased bycatch rate.

19. She says the future health of the ocean depends on fishing less, reducing wasteful bycatch, and taking action on multiple threats to marine ecosystems.

20. So here’s a charge for any inventors out there: Create new fishing gear to reduce bycatch.