Ken Clark
Steve Benton
Yvette Vickers
Liz Walker
Jan Shepard
Nan Greyson
Michael Emmet
Cal Moulton
Tyler McVey
Doc Greyson
Bruno VeSota
Dave Walker
Gene Roth
Sheriff Kovis
Dan White
Porky Reed
George Cisar
Lem Sawyer
Joseph Hamilton
Sam Peters (uncredited)
Walter Kelly
Mike, the scuba expert (uncredited)
Guy Buccola
Giant Leech (uncredited)
James Miller
Jermey (uncredited)
Killian Miller
Victim (uncredited)
Ross Sturlin
Giant Leech (uncredited)