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.