Cheap Magnets Could Keep Sharks Out of Fishing Nets

Cheap Magnets Could Keep Sharks Out of Fishing Nets

Countless sharks, sea turtles, seals, dolphins, rays and fish of all descriptions needlessly die before they can be thrown back overboard. Philippe Colombi/Getty ImagesWe kill 100 million sharks every year. We found that traps with magnets had roughly 30 percent less likelihood of catching sharks and rays compared to traps without. Win-wins are great, but we've got a long way to go before we make a dent in that 100 million sharks per year. The magnets seem to work well for traps, but magnets don't work on longlines — the lines are fitted with metal hooks, so the magnets tangle the gear.

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