Metals repel sharks from fishing gear?

Date: 1/10/2008

A recent study by National Oceanic and Atmospheric Administration (NOAA) scientists on captive juvenile sandbar sharks show the presence of an electropositive alloy clearly altered the swimming patterns of individual animals and temporarily deterred feeding in groups of sharks. Electric fields generated by electropositive alloys are believed to deter or repel sharks by overloading the shark’s electro receptive sensory system. The study clearly showed that alloy has the potential to repel sharks from pelagic longline fishing gear so they were not caught as by-catch. An estimated 11 to 13 million sharks are caught worldwide as by-catch each year.

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