Directed by
| John Sherwood | ||
Writing Credits
| Arthur A. Ross | ... | (story by) (as Arthur Ross) |
| Arthur A. Ross | ... | (screenplay by) (as Arthur Ross) |
Cast (in credits order) verified as complete
| Jeff Morrow | ... | Dr. William Barton | |
| Rex Reason | ... | Dr. Thomas Morgan | |
| Leigh Snowden | ... | Marcia Barton | |
| Gregg Palmer | ... | Jed Grant | |
| Maurice Manson | ... | Dr. Borg | |
 |
James Rawley | ... | Dr. Johnson |
| David McMahon | ... | Captain Stanley | |
| Paul Fierro | ... | Morteno | |
| Lillian Molieri | ... | Mrs. Morteno | |
|
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Larry Hudson | ... | State Trooper |
|
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Frank Chase | ... | Steward |
| Rest of cast listed alphabetically: | |||
| Ricou Browning | ... | The Gill Man (In Water) (uncredited) | |
| Don Megowan | ... | The Gill Man (On Land) (uncredited) | |
| George Sowards | ... | Ranchhand (uncredited) | |
Produced by
| William Alland | ... | producer (produced by) |
Music by
| Irving Gertz | ... | (uncredited) |
| Henry Mancini | ... | (uncredited) |
| Heinz Roemheld | ... | (uncredited) |
Cinematography by
| Maury Gertsman | ... | director of photography |
Editing by
| Edward Curtiss | ||
Art Direction by
| Alexander Golitzen | ||
| Robert Emmet Smith | ... | (as Robert E. Smith) |
Set Decoration by
| John P. Austin | ||
| Russell A. Gausman | ||
Makeup Department
| Joan St. Oegger | ... | hair stylist |
| Bud Westmore | ... | makeup supervisor |
| Vincent Romaine | ... | makeup artist (uncredited) |
Production Management
| Lew Leary | ... | unit manager (uncredited) |
Second Unit Director or Assistant Director
| Joseph E. Kenney | ... | assistant director |
| James Curtis Havens | ... | second unit director (uncredited) |
Art Department
| Julius Rosenkrantz | ... | props (uncredited) |
Sound Department
| Leslie I. Carey | ... | sound |
| Robert Pritchard | ... | sound |
| Peter Berkos | ... | sound editor (uncredited) |
| Robert L. Bratton | ... | sound editor (uncredited) |
| George Hoagland | ... | sound editor (uncredited) |
Visual Effects by
| Clifford Stine | ... | special photography |
Stunts
| James Jackson Jr. | ... | stunt double: Gregg Palmer (uncredited) |
| Al Wyatt Sr. | ... | stunts (uncredited) |
Camera and Electrical Department
| Clifford Stine | ... | special photography |
| Russ Franks | ... | key grip (uncredited) |
| Max Nippell | ... | gaffer (uncredited) |
| Eddie Pyle | ... | camera operator (uncredited) |
| Lew Swartz | ... | assistant camera (uncredited) |
| Richard Walling | ... | still photographer (uncredited) |
Costume and Wardrobe Department
| Jay A. Morley Jr. | ... | gowns |
| Roger J. Weinberg | ... | wardrobe (uncredited) |
Music Department
| Joseph Gershenson | ... | music supervisor |
| Ethmer Roten | ... | musician: flute (uncredited) |
| Hans J. Salter | ... | composer: additional music (uncredited) |
| Herman Stein | ... | composer: stock music (uncredited) |
Script and Continuity Department
| Adele Cannon | ... | script supervisor (uncredited) |
Additional Crew
| Reynold Brown | ... | movie poster art (uncredited) |
| Leon Charles | ... | dialogue director (uncredited) |
| N.E. Gourson | ... | technical adviser (uncredited) |
| Jack Kevan | ... | creature design (uncredited) |
