Scientists surgically transform the Creature into an air-breather, but being able to live on land is not enough to make him comfortable with humans. Enraged, he turns his wrath on anyone who comes near as he desperately tries to return to the deep-water world where he truly belongs.
Dr. Thomas Morgan
Dr. William Barton
Marcia Barton
Jed Grant
Dr. Borg
Dr. Johnson
Capt. Stanley
Morteno
Mrs. Morteno
Steward
State Trooper
The Gill Man (in water)(uncredited)
The Gill Man (on land)(uncredited)
Ranch Hand (uncredited)
