December 26, 2010 3:58 PM

Will generating ocean energy affect migration of sea creatures?

Scientists believe that sharks, turtles, and a lot of other marine creatures use the earth's magnetic fields to navigate as they migrate from spawning grounds across the open seas and back. And that raises a big question for planners of plants generating electricity from tidal and wave movements: could the electro-magnetic fields that go with power generation affect the internal compasses of sea creatures?

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