Rosa's the oldest sea otter at Monterey Bay Aquarium. She was found stranded between Sunset and Manresa State Beaches in southern Santa Cruz County in September 1999, only about four weeks old and weighing just over five pounds.In April 2000, she was released back to the wild where she spent nearly two years until she began interacting with divers and climbing onto kayaks. Because of the potential risks to herself and people, federal wildlife officials declared her non-releasable.