An engineer, a psychologist and several other disparate types take part in an experiment to see if people can live for extended periods of time in a city built under the ocean.
| Camera | Gordon Avil | Director of Photography |
| Directing | Frank McDonald | Director |
| Sound | Ronald Stein | Original Music Composer |
| Writing | Orville H. Hampton | Writer |
| Production | Alex Gordon | Producer |
| Writing | Ruth Alexander | Story |
| Editing | Donald W. Starling | Editor |
| Writing | Alex Gordon | Story |
| Crew | Howard Lydecker | Special Effects Coordinator |
| Art | Don Ament | Art Direction |
| Costume & Make-Up | Ben Lane | Makeup Artist |
| Editing | Al Clark | Editor |
