Release calendarTop 250 moviesMost popular moviesBrowse movies by genreTop box officeShowtimes & ticketsMovie newsIndia movie spotlight
    What's on TV & streamingTop 250 TV showsMost popular TV showsBrowse TV shows by genreTV news
    What to watchLatest trailersIMDb OriginalsIMDb PicksIMDb SpotlightFamily entertainment guideIMDb Podcasts
    OscarsEmmysToronto Int'l Film FestivalHispanic Heritage MonthIMDb Stars to WatchSTARmeter AwardsAwards CentralFestival CentralAll events
    Born todayMost popular celebsCelebrity news
    Help centerContributor zonePolls
For industry professionals
  • Language
  • Fully supported
  • English (United States)
    Partially supported
  • Français (Canada)
  • Français (France)
  • Deutsch (Deutschland)
  • हिंदी (भारत)
  • Italiano (Italia)
  • Português (Brasil)
  • Español (España)
  • Español (México)
Watchlist
Sign in
  • Fully supported
  • English (United States)
    Partially supported
  • Français (Canada)
  • Français (France)
  • Deutsch (Deutschland)
  • हिंदी (भारत)
  • Italiano (Italia)
  • Português (Brasil)
  • Español (España)
  • Español (México)
Use app
  • Cast & crew
  • User reviews
  • Trivia
  • FAQ
IMDbPro

Terror Beneath the Sea

Original title: Kaitei daisensô
  • 1966
  • TV-PG
  • 1h 19m
IMDb RATING
4.7/10
682
YOUR RATING
Terror Beneath the Sea (1966)
HorrorSci-Fi

A group of surface dwellers comes upon an underwater city ruled by a mad scientist and his amphibious servants.A group of surface dwellers comes upon an underwater city ruled by a mad scientist and his amphibious servants.A group of surface dwellers comes upon an underwater city ruled by a mad scientist and his amphibious servants.

  • Director
    • Hajime Satô
  • Writers
    • Masami Fukushima
    • Kôichi Ôtsu
  • Stars
    • Shin'ichi Chiba
    • Peggy Neal
    • Franz Gruber
  • See production info at IMDbPro
  • IMDb RATING
    4.7/10
    682
    YOUR RATING
    • Director
      • Hajime Satô
    • Writers
      • Masami Fukushima
      • Kôichi Ôtsu
    • Stars
      • Shin'ichi Chiba
      • Peggy Neal
      • Franz Gruber
    • 21User reviews
    • 30Critic reviews
  • See production info at IMDbPro
  • See production info at IMDbPro
  • Photos161

    View Poster
    View Poster
    View Poster
    View Poster
    View Poster
    + 157
    View Poster

    Top cast30

    Edit
    Shin'ichi Chiba
    Shin'ichi Chiba
    • Ken Abe
    • (as Sonny Chiba, Shin-ichi Chiba)
    Peggy Neal
    • Jenny Gleason
    Franz Gruber
    • Commander Brown
    • (as Frank Gruber)
    Gunter Braun
    • Captain Bob
    • (as Gunther Braun)
    Andrew Hughes
    Andrew Hughes
    • Professor Howard
    Erik Neilson
    • Dr. Rufus Moore
    • (as Enric Nielsen, Erick Nielson)
    Beverly Kahler
    • Luisa
    Hajime Satô
      Mike Danning
      • Dr. Josef Heim
      • (as Mike Daneen)
      Hideo Murota
      • Henchman
      Kôji Miemachi
      • Chan
      • (as Tsuneji Miemachi)
      Hans Horneff
      • Bill Sirville
      • (as Hans Hornef)
      John Crane
      • Richard
      • (as John Kleine)
      Jacques Enghien
      • Scientist
      Akemi Fuji
      • Researcher
      B. Hariura
      • Officer E.
      Brown Keller
      • Officer B.
      Ichirô Mizuki
      • Naval Base Engineer D.
      • Director
        • Hajime Satô
      • Writers
        • Masami Fukushima
        • Kôichi Ôtsu
      • All cast & crew
      • Production, box office & more at IMDbPro

      User reviews21

      4.7682
      1
      2
      3
      4
      5
      6
      7
      8
      9
      10

      Featured reviews

      Dethcharm

      Never Trust A Fish-Man With A Loaded Gun...

      In AGENT X-2: OPERATION UNDERWATER, a mad scientist is bent on world domination through his army of cyborg-mutant fish-men. Only Sonny Chiba and his scuba partner can save the Earth from hideous totalitarian control.

      They'll have to stay strong as they encounter the scientist's terrible gun-toting sardines!

      This movie is loaded with enough cheeeze to fill 10 nuclear submarines! Is it absurd? Of course, but it's also highly entertaining...
      3spencejoshua-22736

      It's a great comedy.

      This is a fun adventure flick that conjures up feelings of nostalgic Japanese horror. It's not scary but will keep you in stitches during the viewing and long afterwards. This film would fit nicely into a "films so bad...they're good!" library. It's worth at least one viewing if only for the laughs and the special effects.......oh, they're great!
      3jamesrupert2014

      Silly soggy tokusatsu

      Ken and Jenny, a doctor and a reporter (Shin'ichi (Sonny) Chiba and Peggy Neal), stumble across the undersea lair of a megalomanic and his army of surgically-modified amphibious cyborgs with which he plans to conquer the world. This juvenile offering from Toei Studios features a mostly Western cast alongside action-hero Chiba (chop-socky fans will be disappointed at the dearth of athletic fights) with a near amateur performance by Neal (to be fair, she has little to work with and spends most of her screen time trying to look horrified). The film contains some reasonably well done underwater miniature work but the centerpiece, the scaly cyborgs are laughable when seen clearly, especially when their costumes are torn. The gilled minions are controlled by the chortling villain through a control box with apparently three settings (off, work, and fight) and are ostensibly brainless (or so we are told) yet seem to know how to effectively use guns. There is an entertaining (if not very convincing) transition scene in which nefarious Doctor Heim (Mike Daneen) creates a cyborg (courtesy of a lot of squishy stop-motion shots intercut with numerous close-ups of Jenny looking increasingly horrified). A later transformation scene involving the heroes leaves the two leads running around with what appears to be pieces of latex stuck to their chins (much to Jenny's horror). There a couple of action sequences involving the undersea-base's defenses vs. An attacking submarine (apparently armed with the X4, a weapon that could "blow up the whole ocean") leading to a finale that includes all of the expected climactic tropes. The film suffers from some editing problems (the scenes in which the heroes are to be transformed seem to be out of sequence or partially deleted) and the overall production including the sound, music, and cinematography, is substandard even for a low-budget Japanese techno-adventure targeting a young audience. I have a fondness for (and a high tolerance of) Japanese science fiction films but 'Terror Beneath the Sea' is pretty awful, even when compared to Toho's dreadful 'Latitude Zero' (1970) or Peggy Neal's other tokusatsu outing, the extremely goofy but entertaining 'The X from Outer Space' (1967).
      3aztrshbyz

      Not good, but not as bad as it could be

      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.
      4kevinolzak

      Seen on Pittsburgh's Chiller Theater in 1974

      1966's "Terror Beneath the Sea" is a forgotten sci-fi from Japan, less surprising once you learn it's from neither Godzilla's Toho, or Gamera's Daiei. It's actually a Toei production, one of three that made it to American shores, with "Magic Serpent" and "The Green Slime" better remembered. Apart from future martial arts star Sonny Chiba, we have teenage blonde Peggy Neal, who went on to star in Shochiku's "The X from Outer Space," who promptly disappeared from the scene. The Gill Man costumes are initially intriguing, but become obvious through repetition, though the prospect of human beings being transformed into amphibian cyborgs manages to produce some effective moments. Director Hajime Sato really struck paydirt with his final film, 1968's "Goke Body Snatcher from Hell" (also from Shochiku), as nightmarish a combination of horror and sci-fi as any made in Japan. "Terror Beneath the Sea" aka "Water Cyborgs" was frequently seen on television through the late 70s (not much since), airing three times on Pittsburgh's Chiller Theater from 1974 to 1978.

      More like this

      Magic Serpent
      6.4
      Magic Serpent
      The Golden Bat
      6.1
      The Golden Bat
      Akakage: 3-D Adventure Movie
      6.3
      Akakage: 3-D Adventure Movie
      Invasion of the Neptune Men
      2.3
      Invasion of the Neptune Men
      The X from Outer Space
      4.8
      The X from Outer Space
      The Thing from Another World
      7.0
      The Thing from Another World
      Atragon
      5.8
      Atragon
      Swastika
      6.8
      Swastika
      The Mad Ghoul
      5.8
      The Mad Ghoul
      Latitude Zero
      5.9
      Latitude Zero
      The Monster and the Girl
      6.0
      The Monster and the Girl
      Secret of the Red Orchid
      5.5
      Secret of the Red Orchid

      Related interests

      Mia Farrow in Rosemary's Baby (1968)
      Horror
      James Earl Jones and David Prowse in Star Wars: Episode V - The Empire Strikes Back (1980)
      Sci-Fi

      Storyline

      Edit

      Did you know

      Edit
      • Trivia
        This was Peggy Neal's motion picture debut.
      • Goofs
        During one of the fight scenes (after control of the cyborgs is lost) one of the cyborg costumes is clearly torn below the shoulder, exposing the stuntman's skin.
      • Crazy credits
        The American version's opening credits constantly overlap each other and fade in and out.
      • Alternate versions
        Made in 2 versions with Japanese version having more violence and international version having longer English language performances.
      • Connections
        Featured in Chiller Theatre: Terror Beneath the Sea (1975)

      Top picks

      Sign in to rate and Watchlist for personalized recommendations
      Sign in

      FAQ14

      • How long is Terror Beneath the Sea?Powered by Alexa

      Details

      Edit
      • Release date
        • July 1, 1966 (Japan)
      • Countries of origin
        • Japan
        • Italy
        • United States
      • Languages
        • English
        • Japanese
      • Also known as
        • Agent X-2: Operation Underwater
      • Filming locations
        • Toei Studio, Japan
      • Production companies
        • K. Fujita Associates Inc.
        • Ram Films Inc.
        • Toei Company
      • See more company credits at IMDbPro

      Tech specs

      Edit
      • Runtime
        • 1h 19m(79 min)
      • Sound mix
        • Mono
      • Aspect ratio
        • 1.33 : 1
        • 1.66 : 1

      Contribute to this page

      Suggest an edit or add missing content
      • Learn more about contributing
      Edit page

      More to explore

      Recently viewed

      Please enable browser cookies to use this feature. Learn more.
      Get the IMDb App
      Sign in for more accessSign in for more access
      Follow IMDb on social
      Get the IMDb App
      For Android and iOS
      Get the IMDb App
      • Help
      • Site Index
      • IMDbPro
      • Box Office Mojo
      • License IMDb Data
      • Press Room
      • Advertising
      • Jobs
      • Conditions of Use
      • Privacy Policy
      • Your Ads Privacy Choices
      IMDb, an Amazon company

      © 1990-2025 by IMDb.com, Inc.