The Globe reports that a man was forced to cut his morning swim short today when it was discovered that he was in Boston Harbor. The Coast Guard intercepted the man, who had dived into the Harbor at Rowe's Wharf, and forced him out of the water with two high speed boats. Bostonist knows that the tourists are thick on the ground over by the waterfront this time of year, but there must be a better -- and less filthy -- shortcut.