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