SAN DIEGO -- A gray whale that wandered into San Diego Bay last week was still cruising the harbor's waters Tuesday, seemingly determined to extend its break from annual migration duties.

The 30-foot cetacean, which was first spotted last Tuesday offshore from Shelter Island, was swimming just south of the Coronado Bridge shortly after sunrise Tuesday morning, according to the U.S. Coast Guard.

The federal maritime agency has been asking boaters to stay at least 100 yards from the mottled-slate-and-white-colored sea mammal.

On Monday, the Coast Guard announced that it was suspending its monitoring of the leviathan's movements pending any further requests from the National Marine Fisheries Service.

Wildlife officials hope the whale will soon find its way back into the ocean to join its fellow grays on their annual migration from the lagoons of Baja California, where they calf and mate in wintertime, to Alaskan waters, where they summer.