14 user 31 critic

The Terror Beneath the Sea (1966)

Kaitei daisensô (original title)
While covering a test of guided torpedoes, two reporters believe they saw what appeared to be a strange-looking swimming creature. They investigate the matter further and discover that ... See full summary »


Hajime Satô


Masami Fukushima (book), Kôichi Ôtsu




Cast overview:
Shin'ichi Chiba ... Ken Abe (as Sonny Chiba)
Peggy Neal Peggy Neal ... Jenny Gleason
Franz Gruber Franz Gruber ... Commander Brown (as Frank Gruber)
Gunter Braun Gunter Braun ... Captain Bob
Andrew Hughes Andrew Hughes ... Professor Howard
Erik Neilson Erik Neilson ... Dr. Moore (as Enric Nielsen)
Beverly Kahler Beverly Kahler
Hajime Satô Hajime Satô ... (as Terence Ford)
Mike Daneen Mike Daneen ... Dr. Josef Heim
Hideo Murota Hideo Murota ... Henchman
Tsuneji Miemachi Tsuneji Miemachi
Hans Horneff Hans Horneff ... (as Hans Hornef)
John Kleine John Kleine


While covering a test of guided torpedoes, two reporters believe they saw what appeared to be a strange-looking swimming creature. They investigate the matter further and discover that there is a race of fish-men living under the sea. The fish-men capture the pair and keep them prisoner in their underwater city. Written by frankfob2@yahoo.com

Plot Summary | Add Synopsis


Horror | Sci-Fi


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Did You Know?


The so-called unmanned submarine that was destroyed during the torpedo demonstration was clearly based on the USS Triton, a U.S. nuclear-powered submarine that was famous for making the first submerged around-the-world voyage in 1960. See more »


At minute 08:28 Ken and Jenny are shown close enough to a beach for the waves behind them to start beach rolling (surf), five seconds later with the boat still sitting still they're back outside the surf line. See more »

Crazy Credits

The American version's opening credits constantly overlap each other and fade in and out. See more »

Alternate Versions

Made in 2 versions with Japanese version having more violence and international version having longer English language performances. See more »


Featured in Son of Svengoolie: Terror Beneath the Sea (1966) (1981) See more »

User Reviews

Not good, but not as bad as it could be
12 August 2017 | by aztrshbyzSee all my reviews

This is no CREATURE FROM THE BLACK LAGOON, but I had extremely low expectations going in. The movie was a little better than I anticipated, but not by much.

The film concerns two journalists who realize there is something amiss going on in the waters off of Japan when they view an informational film done by the military and see something that they shouldn't. When they try to investigate, they unwillingly become part of a mad scientist's master plan to build and rule an underwater kingdom.

There are a variety of actors in TERROR BENEATH THE SEA, both Japanese and non-Japanese. Most of the film is dubbed which can always lend itself to overacting a bit - there is no exception here. I also found that the roles were somewhat one dimensional - the mad scientist was the stereotypical mad scientist (complete with dark sunglasses), the lead female was the stereotypical woman from the 60's (outside of having a job) who looked to her man to save her and whined and cried a lot, the military guys were as formal as you would expect, etc. The monsters were fairly well done for the time and not as bad as some others I've seen but their costumes were obviously cheaply made. Interestingly, throughout most of the film they are programmed to act in a certain way, but towards the end, they have a mind of their own.

The plot line is rather slow and the special effects were really saved for the end of the film. There are lots of underwater explosions that were actually pretty well done for the time although some other reviewers would disagree. The other effects were really chintzy though. The soundtrack was the typical "mod" type common in the 1960's.

This is really a movie for either kids or fans of old Japanese monster movies. I wouldn't be able to recommend it to a horror fan.

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Japan | Italy | USA


English | Japanese

Release Date:

1 July 1966 (Japan) See more »

Also Known As:

The Terror Beneath the Sea See more »

Filming Locations:

Toei Studio, Japan

Company Credits

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Technical Specs

Sound Mix:



Color (Eastmancolor)

Aspect Ratio:

1.33 : 1
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