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.
as Dr. Thomas Morgan
as Dr. William Barton
as Marcia Barton
as Jed Grant
as Dr. Borg
as Dr. Johnson
as Capt. Stanley
as Morteno
as Mrs. Morteno
as Steward
as State Trooper
as The Gill Man (in water)(uncredited)
as The Gill Man (on land)(uncredited)
as Ranch Hand (uncredited)
