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Can Certain Metals Repel Sharks From Fishing Gear?

Achilles Tang

By Achilles Tang,
in General Reefkeeping_

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Achilles Tang

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Sharks in captivity avoid metals that react with seawater to produce an electric field, a behavior that may help fishery biologists develop a strategy to reduce the bycatch of sharks in longline gear. Shark bycatch is an increasing priority worldwide given diminished populations of many shark species, and because sharks compete with target species for baited lines, reducing fishing efficiency and increasing operating costs.

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