Trailer
Cast
Don Megowan
The Gill Man (on land)(uncredited)
George Sowards
Ranch Hand (uncredited)
Rex Reason
Dr. Thomas Morgan
Leigh Snowden
Marcia Barton
James Rawley
Dr. Johnson
David McMahon
Capt. Stanley
Lillian Molieri
Mrs. Morteno
Frank Chase
Steward
Ricou Browning
The Gill Man (in water)(uncredited)
Jeff Morrow
Dr. William Barton
Gregg Palmer
Jed Grant
Maurice Manson
Dr. Borg
Paul Fierro
Morteno