Finally: Surfer invents shark repellent

The ‘shark shield’ developed by a company in Australia, emits a protective electrical field via its water proof antenna, that supposedly deters sharks without harming surrounding wildlife…

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However Dr. Kim Holland, a marine biologist at the Hawaii Institute of Marine Biology Shark Research Group, said warding off sharks is not that simple.

He said that for most sharks an electric pulse is like nails on a chalkboard — annoying but not always effective.

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