Trailer
Cast
Rodd Redwing
Luis (uncredited)
Richard Carlson
Dr. David Reed
Nestor Paiva
Captain Lucas
Whit Bissell
Dr. Edwin Thompson
Perry Lopez
Tomas (uncredited)
Ben Chapman
The Gill Man On Land (uncredited)
Julie Adams
Kay Lawrence
Bernie Gozier
Zee
Richard Denning
Dr. Mark Williams
Antonio Moreno
Dr. Carl Maia
Ricou Browning
The Gill Man In Water (uncredited)
Art Gilmore
Narrator (voice) (uncredited)