Given the chance to live in a simulated underwater home for a month, a scientist convinces his family to take advantage of the offer. Once the family agrees to move in, underwater mayhem occurs!
You can now watch Hello Down There online on the following streaming providers in the United States.
| Writing | Ivan Tors | Story |
| Production | George Sherman | Producer |
| Production | Ivan Tors | Producer |
| Directing | Jack Arnold | Director |
| Writing | John McGreevey | Writer |
| Writing | Art Arthur | Story |
| Writing | Frank Telford | Writer |
| Directing | Ricou Browning | Director |
| Directing | William C. Gerrity | Assistant Director |
| Costume & Make-Up | Guy Del Russo | Makeup Supervisor |
| Camera | Oscar Barber | Camera Operator |
| Art | Jack T. Collis | Art Direction |
| Editing | Erwin Dumbrille | Editor |
| Sound | Gordon Zahler | Music Supervisor |
| Costume & Make-Up | Marlana May | Makeup Artist |
| Camera | James Pergola | Camera Operator |
| Camera | Clifford H. Poland Jr. | Director of Photography |
| Costume & Make-Up | Irene Aparicio | Hairstylist |
| Camera | Jordan Klein Sr. | Underwater Camera |
| Art | Don K. Ivey | Set Decoration |
| Camera | Lamar Boren | Underwater Director of Photography |
| Production | William P. Owens | Unit Production Manager |
| Directing | Nat Holt Jr. | Second Assistant Director |
| Sound | Leonard Davison | Sound Effects Editor |
| Lighting | Walter G. Morris Jr. | Gaffer |
| Sound | Jeff Barry | Original Music Composer |
