After spending nearly three weeks in Marina del Rey, attracting numerous onlookers as it swam and fed in the shallow waters of the main channel, a young 20-foot gray whale has continued on its migration north.

Having been a popular attraction in the Marina during its stay, the gray whale finally departed the area at about 6:30 p.m. Friday, June 19th, according to Marine Animal Rescue.

During its three-week rest-over, the whale would periodically swim out to sea but return to the Marina channel.

Los Angeles County lifeguards and Marine Animal Rescue workers followed the whale from Venice Beach to Pacific Palisades. The whale was swimming at a quick, steady pace and stayed about 400 yards off-shore, said Peter Wallerstein of Marine Animal Rescue.

The whale was escorted on its journey along the coast by a pod of about 50 bottlenose dolphins, Wallerstein said.

Officials lost track of the whale as it swam into deeper waters.

The gray whale is continuing its northern migration from Baja, Mexico to the Bering and Chukchi Seas near Alaska, where gray whales spend the summer.