Northern waters are now home to tropical fish

07/25/2014 | National Geographic News (free registration)

Climate change is driving tropical fish northward, with species used to relatively sparse coral reefs suddenly finding an appetite for the more abundant vegetation of northern kelp and sea grass beds. That could lead to radical changes in northern aquatic ecosystems, researchers say. "The faunas are mixing, and nobody can see what the outcome will be," says marine scientist Ken Heck.

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