Directed by
| Herman Hoffman | ||
Writing Credits (in alphabetical order)
| Art Arthur | ... | (written by) |
Cast (in credits order)
| Lloyd Bridges | ... | Mike Nelson | |
| Ken Drake | ... | Dr. Wilf Winnick | |
| Anthony George | ... | Stan Graham | |
| Lisa Gaye | ... | Louise Wiley | |
| Leonard Nimoy | ... | Jerry Wiley | |
 |
Nancy Millard | ... | Nurse |
Produced by
| Ivan Tors | ... | producer |
Cinematography by
| Robert Hoffman | ... | director of photography |
Editing by
| Lee Hall | ... | (as Lee C. Hall) |
Production Management
| Joe Wonder | ... | production manager |
Second Unit Director or Assistant Director
| Wilbur McGaugh | ... | assistant director |
| Paul Stader | ... | second unit director |
Art Department
| Robert Kinoshita | ... | set designer |
Sound Department
| Al Lincoln | ... | sound supervisor |
Special Effects by
| Harry Redmond Jr. | ... | special underwater effects |
Stunts
| Dick Dial | ... | stunt double: Lloyd Bridges (uncredited) |
Camera and Electrical Department
| Lamar Boren | ... | underwater photographer |
| Gaylin P. Schultz | ... | key grip (uncredited) |
Costume and Wardrobe Department
| Tommy Thompson | ... | costume supervisor |
Location Management
| William P. Owens | ... | location manager (as William Owens) |
Additional Crew
| Courtney Brown | ... | supervisor: diving operations |
