MONTEREY, Calif. (KGO) -- Gray whales have started migrating south, along our coast. A drone has captured incredible images of a calf, swimming alongside its mother.
The Monterey Bay Whale Watch provided this rare sight.
VIDEO: Whale breaches with spectacular rainbow in Monterey Bay
Gray whales are being attracted to Monterey Bay on their migration because of an abundance of squid, which provide plenty of food.
A marine biologist says warmer waters in Mexico give the whales a safe place to give birth and nurse their calves.
The whales will return to Alaska in the spring.
See more stories, photos, and videos on whales.
Grey whale, calf swim together in Monterey Bay