Frank Baroni
— Miki
Allen Cort
— Allan
Keith Kelsch
— Ben
James Camp
— Wayne
Tody Bernard
— Sheriff
John K. Brune
— John
Margareth Hanks
— Elizabeth
Van Jensens
— Indian
Don Perrin
— Bartender
Claude File
— Oceanographer
Mitzi McCall
— Ben's Mother
Charlie Brill
— Ben's Father
Laura Gemser
— Lab Assistant (uncredited)
Robert LaBrosse
— Police Officer (uncredited)