 Although the action in the film is supposed to take place on  fictional "Gloucester Island" off the coast of New England, most of  the outdoor scenes were filmed in Mendocino California. Mendocino in  the 1960s was a somewhat remote artist colony on a rocky cape  projecting into the Pacific Ocean, about 100 miles north of San  Francisco. The harbor scenes were filmed in NOYO Harbor, just south  of Fort Bragg, where Carines Fish Grotto and Cappys Bar still  exist to this day. (2006)