Affixing green LED lights to fishing nets significantly reduces the catch of nontargeted animals, such as turtles, sharks, and squids, according to recent research. WeekendReads
An inky, tentacled squid stuck in a net can be a messy problem for a fisher. And for a loggerhead turtle or a diamond stingray, getting tangled in a net often means death. Now, new research offers hope: It shows that affixing green light-emitting diode lights to fishing nets significantly reduces the catch of nontargeted animals, such as sharks and squids, without affecting the quality and quantity of desired fish such as grouper and halibut.
Many coastal fishers use gillnets, which hang in the water like chain-link fences, to bring in their catches. The nets—which can drift for hours or days—don’t discriminate between desirable and undesirable species, which are often tossed overboard with fatal injuries. This “bycatch” contributes significantly to the global declines of species including dolphins and sea turtles, and it slows down fishers’ daily operations.
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