An extremely rare gray whale was spotted in the Atlantic. Scientists say it's only the beginning.

The healthy animal, spotted March 1 off Cape Cod, used the ice-free Northwest Passage to access waters unknown to the species for more than two hundred years.

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North Atlantic Right Whale

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Video Rare gray whale sighting in the Atlantic - ABC News

Lost in the Med: Pacific grey whale ventures far from home

Florida beachgoers spot a North Atlantic right whale mother and

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