Clambake is a 1967 American beach party musical film directed by Arthur H. Nadel and starring Elvis Presley, Shelley Fabares, Bill Bixby, Gary Merrill and James Gregory. Written for the screen by Arthur Browne Jr., the film is about the heir to an oil fortune who trades places with a water-ski instructor at a Florida hotel to see if girls will like him for himself, rather than his father's money. Clambake was the last of Presley's four films for United Artists. The movie reached number 15 on the national weekly box-office charts.