Een reusachtig monster wordt in zijn slaap gestoord als er in zijn buurt radioactief afval wordt gestort. Het beest is eveneens radioactief en het leger probeert hem met alle mogelijke middelen te stoppen voor hij heel Engeland besmet
Nee, helaas is Behemoth, the Sea Monster nog niet beschikbaar op Netflix in Nederland.
| Writing | Robert Abel | Story |
| Writing | Eugène Lourié | Screenplay |
| Directing | Eugène Lourié | Director |
| Writing | Alan J. Adler | Story |
| Camera | Ken Hodges | Director of Photography |
| Editing | Lee Doig | Editor |
| Production | Ted Lloyd | Producer |
| Production | David Diamond | Producer |
| Sound | Edwin Astley | Original Music Composer |
| Art | Harry White | Art Direction |
| Art | Eugène Lourié | Production Design |
| Sound | Richard Marden | Sound Editor |
| Crew | Willis H. O'Brien | Special Effects |
| Crew | Pete Peterson | Special Effects |
| Crew | Jack Rabin | Special Effects |
| Costume & Make-Up | Jimmy Evans | Makeup Artist |
| Crew | Louis DeWitt | Special Effects |
| Crew | Irving Block | Special Effects |
| Costume & Make-Up | Bernadette Ibbetson | Hairstylist |
| Camera | Desmond Davis | Camera Operator |
| Directing | Kim Mills | First Assistant Director |
| Directing | Jennifer Herrinshaw | Continuity |
| Costume & Make-Up | Freda Gibson | Wardrobe Master |
| Sound | Sid Wiles | Sound |
| Sound | Edwin Astley | Conductor |
| Production | Jacques de Lane Lea | Production Manager |
| Visual Effects | Willis H. O'Brien | Visual Effects |
| Directing | Douglas Hickox | Director |
| Writing | Daniel James | Screenplay |