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Gray Whale

The Gray Whale or Grey Whale, more recently called the Eastern Pacific Gray Whale, is a whale that travels between feeding and breeding grounds yearly.

It reaches a length of about 15 meters, a weight of 36 tons and an age of 50 - 60 years.

This animal is one of the oldest species of mammals, having been on Earth for about 30 million years.

Two Pacific Ocean populations of Gray Whales exist: one small population travelling between the Sea of Okhotsk and southern Korea, and a larger one travelling between the waters off Alaska and the Baja California.

A third, North Atlantic, population was hunted to extinction 300 years ago.

Note:   The above text is excerpted from the Wikipedia article "Gray Whale", which has been released under the GNU Free Documentation License.
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