Over a period of approximately three months, Gray Whales travel along the coast of North America to the shallow breeding lagoons of Baja California, Mexico. Gray Whales average 80 miles a day at an approximate speed of 5mph. It is believed that Cetaceans are able to shut down half of their brain to sleep while they continue swimming. Considering they are conscious breathers, they need to think about every breath. While one half of their brain is resting, the other half is aware enough to breathe. In this case, the whales are able to continue swimming on their migration route and take short naps along the way.

Gray Whales have a specific range and predictable migration pattern. During the summer months they feed in northern Alaska in the Chukchi and Bering Seas, in and around the Arctic Circle.

Over a period of approximately three months, Gray Whales travel along the coast of North America to the shallow breeding lagoons of Baja California, Mexico. Gray Whales average 80 miles a day at an approximate speed of 5mph. It is believed that Cetaceans are able to shut down half of their brain to sleep while they continue swimming. Considering they are conscious breathers, they need to think about every breath. While one half of their brain is resting, the other half is aware enough to breathe. In this case, the whales are able to continue swimming on their migration route and take short naps along the way.