Anthropology Professor Robert Orwell Sutwell and his secretary Marianne are studying the sex habits of teenagers. The surfing teens led by Frankie and Dee Dee don't have much sex but they sing, battle the motorcycle rats and mice led by Eric Von Zipper and dance to Dick Dale and the Del Tones.
Professor Sutwell
Marianne
Frankie
Dolores
Cappy
Eric Von Zipper
Ava
Ken
Deadhead
Himself
J.D.
The Ratz
The Ratz
The Ratz
The Mice
The Mice
Ed
Rhonda
Tom
Surfer
Sue
Surfer
Beach Girl
Beach Boy
Beach Girl
Tour Guide
Beach Girl
Beach Boy
Beach Girl
Beach Boy
Surfer
Surfer
Perpetual Motion Dancer
Big Daddy
Big Boy (uncredited)
Beach Girl (uncredited)
Beach Boy (uncredited)
Beach Boy (uncredited)
Surfer (uncredited)
Beach Boy (uncredited)
Beach Boy (uncredited)
Beach Boy (uncredited)
Blonde Yoga Girl (uncredited)
Surfer (uncredited)