Space Amoeba

Japan Release: 1970
Running Time:
84 minutes

Space Amoeba

Japanese Title

ゲゾラ・ガニメ・カメーバ: 決戦! 南海の大怪獣
[Gezora, Ganimes, Kamoebas: Kessen! Nankai no Daikaiju]

Distributor: Production:


The Helios-7 rocket, in route to explore Jupiter, is attacked by a large space amoeba. After the assault, the unmanned rocket crashes toward earth, sinking into the sea between Hawaii and the Mariana Islands. This incident is seen by photographer Taro Kudo during a plane ride. Kudo is later sent to take possible development photos on Selgio Island, which happens to be near where the rocket crashed. A four crew expedition disembarks on the island, not knowing the danger ahead. As it turns out, the island itself is under siege from a mammoth cuttlefish named Gezora. Kudo is convinced more is at stake here than just Gezora, and wants to search the nearby waters for the location of the Helios-7...

Live Action Science Fiction Kaiju

Box Office - Stock Footage - DVDs - CDs - Pictures - Background - Concept Art - Cut Scenes - Reviews


International Title

Space Amoeba

Initial US Title

Yog, Monster from Space
US Distributor: AIP (1971) / Time: 84 Minutes

Alternate Titles

Gezora, Ganimes, Kamoebas: Decisive Battle! Giant Monsters of the South Seas
[Literal translation]

The Terror Attack of the Monsters

The Space Invaders

Atom, the Monster Galaxy


Aliens, SDF & Misc.



Directed by Ishiro Honda
Writing credits Ei Ogawa
Produced by Tomoyuki Tanaka, Fumio Tanaka
Music by Akira Ifukube
Cinematography by Taiichi Kankura, Yoichi Manoda
Film Editing by Masahisa Himi
Production Design by Takeo Kita
Assistant Director Seiji Tani
Director of Special Effects Teisho Arikawa
Assistant Director of Special Effects Teruyoshi Nakano
Taro Kudo Akira Kubo
Ayako Hoshino Atsuko Takahashi
Makoto Obata Kenji Sahara
Kyoichi Mida, Doctor Yoshio Tsuchiya
Saki, Selgio Island Native Yukiko Kobayashi
Promotion Division Manager Yu Fujiki
Rico, Guide Noritake Saito
Stewardess Yuko Sugihara
Editor Sachio Sakai
Yokoyama, Agent Chotaro Togin
Sakura Wataru Omae
Ombo, Selgio Island Chief Tetsu Nakamura
Selgio Islanders Shigeo Kato, Yukihiko Gondo, Rinsaku Ogata


DVDs and Blu-rays

United States Region 1 Space Amoeba Tokyo Shock (2006) Order
Japan Region 2 Gezora, Ganimes, Kamoebas: Decisive Battle! Giant Monsters of the South Seas Toho (2003)

CD Soundtracks


Background and Trivia

  • Toho submitted the film to the US copyright office on April 22nd, 1988 with the registration number of PA0000395411. The movie was submitted under its international title, Space Amoeba, and a shortened version of its Romaji title, Kessen Nankai no Daikaiju.
  • In the commentary track for the Space Amoeba DVD, producer Fumio Tanaka states that planning went into including a "Dedicated to Eiji Tsuburaya" message at the beginning of the movie, to honor the famed special effects director who passed away earlier that year. However, Tanaka decided against it due to the fact it might have been strange given Tsuburaya had no involvement in the movie or its characters.
  • When interviewed for Toho's DVD release, producer Fumio Tanaka theorized that the name for the island, Selgio Island, was a nod to film director Sergio Leone, who was popular at the time. This would mean that the Japanese name for the island was intended to be Sergio Island. However, when it comes to the isle's English name, Selgio Island is utilized. This is found in the international dubbing of the 1970 film and also the international dub and subtitles for Godzilla: Tokyo S.O.S. (2003). So even though it might have been a nod to the director, the English name for the island appears to be with an l rather than an r. This is not always consistent, though, as the Kaiju Guide of the Playstation 3/4 game Godzilla does call it Sergio Island.
  • Producer Fumio Tanaka noted that the movie was at one time supposed to take place in Guam, but the budget was insufficient for this. It was changed to a fictional location, Selgio Island, that was between Hawaii and the Mariana Islands. Actual filming occurred on Hachijo Island. Izu, closer to the mainland, was originally considered as a stand in for Selgio Island but this was decided against due to conditions in the Winter time when filming was occurring. Producer Fumio Tanaka notes that, at the time, Hachijo Island was being promoted as "the Hawaii of the East" by the hotels there. Tanaka laments that someone on the staff must have believed them which led to the island's selection, and the crew was surprised by how cold it actually was when they arrived. This account is found on the commentary track for the Space Amoeba DVD.
  • Underwater scenes in the movie were filmed at a combination of locations, including pools on the Toho lot and at the Ryugu Palace in the Yomiuri Land amusement park. This fact is mentioned on the commentary track for the Space Amoeba DVD.
  • An early title for the film was "The Great Monster Attack". Cited in the commentary track for the Space Amoeba DVD.
  • The movie was the last feature film completed by Toho's special effects department, which was closed down afterwards on March 1st, 1970. On April 1st, 1970, Tomoyuki Tanaka created Toho Eizo (Toho Vizion), the company's visual production department. The new unit hired many of those who used to make up the former special effects department. Although they still did movie special effects, the unit had more responsibilities in order to eek out larger profits from the division. This included being contracted out for projects not directly related to Toho, such as working on commercials, TV shows, expos and other non-film activities. Noted in Japan's Favorite Mon-Star (ISBN: 1550223488).


Anthony Romero Star Rating
August 17, 2005