Catalina Caper

Catalina Caper also known as Never Steal Anything Wet is a 1967 comedy musical mystery film starring Tommy Kirk. It is one of the last if not the last in the beach party film genre. This entry blends the beach format with a standard crimecaper comedy. It was shot on and around Santa Catalina Island, California.

An ancient Chinese scroll is stolen from a museum in Los Angeles and teenage Don Pringle Kirk arrives on Catalina Island simultaneously. Although approximately half of the film involves swimsuitclad adolescents dancing on yachts in several different dance montages, Pringle and his friends investigate the scrolls theft and discover that the parents of one of the boys is responsible also while attempting to woo a mysteriously depressed young woman Katrina Corelli Ulla Strmstedt from her vaguely threatening boyfriend Angelo Lyle Waggoner. After wrestling the scroll away from Angelo and his cohorts, bent on more dangerous results in an underwater scuba diving action scene, the boys secretly return the scroll to the museum to the relief of the repentant parents.Both Never Steal Anything Wet and Scuba Party were titles planned for the film, before the makers decided on Catalina Caper see Music section below. ........

Source: Wikipedia