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.
| Directing | Jack Arnold | Director |
| Directing | Ricou Browning | Director |
| Writing | Art Arthur | Story |
| Writing | John McGreevey | Writer |
| Writing | Frank Telford | Writer |
| Writing | Ivan Tors | Story |
| Production | George Sherman | Producer |
| Production | Ivan Tors | Producer |
| Camera | Clifford H. Poland Jr. | Director of Photography |
| Editing | Erwin Dumbrille | Editor |
| Art | Jack T. Collis | Art Direction |
| Art | Don K. Ivey | Set Decoration |
| Costume & Make-Up | Irene Aparicio | Hairstylist |
| Costume & Make-Up | Guy Del Russo | Makeup Supervisor |
| Costume & Make-Up | Marlana May | Makeup Artist |
| Production | William P. Owens | Unit Production Manager |
| Directing | William C. Gerrity | Assistant Director |
| Directing | Nat Holt Jr. | Second Assistant Director |
| Sound | Leonard Davison | Sound Effects Editor |
| Camera | Oscar Barber | Camera Operator |
| Camera | Lamar Boren | Underwater Director of Photography |
| Camera | Jordan Klein Sr. | Underwater Camera |
| Lighting | Walter G. Morris Jr. | Gaffer |
| Camera | James Pergola | Camera Operator |
| Sound | Gordon Zahler | Music Supervisor |
| Sound | Jeff Barry | Original Music Composer |
