Glimpses of possible nudity at lunch hour -- police have received calls of alarm. Always on the lookout for sea lions, diners at the Spinnaker restaurant on the fashionable Sausalito waterfront have recently been catching alarming glimpses of a mysterious creature flapping around in the murky water. A naked man has reportedly been swimming in full view of patrons enjoying lunch beside the restaurant's panoramic windows. "The man apparently likes to swim in front of the Spinnaker restaurant and, in what you might call a strategic move, he likes to roll over in front of the guests," said City...