In an effort to find an economic means of purifying salt water, a joint U.S.-Japanese military command is set up on an isolated Japanese island where an unusual salt water lake is situated. However, their purifying experiments arouse the prehistoric monster Obaki from hibernation at the lake's bottom, and it proceeds to attack Japan. Although made by a U.S. independent film company, this film was based on a Japanese Toho monster film of 1958, "Daikaiju Varan", from which all of the monster effects scenes and a few incidental dramatic shots were edited into it.
You can now watch Varan the Unbelievable online on the following streaming providers in the United States.
| Directing | Jerry A. Baerwitz | Director |
| Costume & Make-Up | Robert Cowan | Makeup Artist |
| Production | Jerry A. Baerwitz | Producer |
| Editing | Rudolph Cusumano | Editor |
| Sound | Akira Ifukube | Original Music Composer |
| Camera | Jacques R. Marquette | Director of Photography |
| Directing | Ishirō Honda | Director |
| Visual Effects | Eiji Tsuburaya | Visual Effects |
| Writing | Sid Harris | Screenplay |
| Writing | Ken Kuronuma | Story |
| Writing | Shinichi Sekizawa | Screenplay |
| Sound | Victor B. Appel | Sound Mixer |
| Costume & Make-Up | Robert O'Dell | Costumer |
| Sound | Peter Zinner | Music Editor |
| Sound | Kurt Hernfeld | Sound Effects Editor |
| Directing | Margaret Lawrence | Script Supervisor |
| Editing | Jack Ruggiero | Supervising Film Editor |
| Production | Tomoyuki Tanaka | Producer |
| Directing | Leonard Kunody | Assistant Director |
| Crew | Eiji Tsuburaya | Special Effects |
| Art | Sam Harris | Property Master |
