'Shark-repellent' method could reform fisheries by curbing bycatch

For decades, sharks have been the unintended victims of longline fisheries aimed at tuna and swordfish. Rising accidental catches have contributed to population declines and created serious challenges for both conservation and commercial fishing. And the impacts go beyond the sharks themselves—every time a shark takes the bait, hooks are lost to target species, gear gets damaged, costs climb, and crews face added risks when handling or releasing the animals.