Space Amoeba
movie

An alien aiming for the Earth transforms monsters to attack!
Released August 01, 1970
Overview
When a space probe crash-lands on a far-flung Pacific atoll, the craft's alien stowaways decide to take over their new world one creature at a time. Soon, the parasitic life forms latch onto three indigenous critters -- a squid, a crab and a snapping turtle -- and transform them into colossal mutant monsters.
Cast

Akira Kubo
as
Taro Kudo

Yukiko Kobayashi
as
Saki, native girl
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Atsuko Takahashi
as
Ayako Hoshino

Yoshio Tsuchiya
as
Dr. Kyoichi Mida

Tetsu Nakamura
as
Chieftain Ombo

Sachio Sakai
as
The Editor (uncredited)

Kenji Sahara
as
Makoto Obata

Yū Fujiki
as
Promotion Division Manager (uncredited)
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Noritake Saito
as
Rico, the guide (uncredited)

Chōtarō Tōgin
as
Yokoyama, an agent (uncredited)

Wataru Ōmae
as
Sakura (uncredited)
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Yukihiko Gondō
as
Islander (uncredited)
Crew

Ishirō Honda
as
Director
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Kanae Masuo
as
Sound Recordist

Sadamasa Arikawa
as
Visual Effects
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Fumiyoshi Hara
as
VFX Lighting Artist

Teruyoshi Nakano
as
Visual Effects Director
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Yasushi Sakai
as
Production Manager

Jiro Shirasaki
as
Visual Effects Art Director

Jiro Shirasaki
as
Special Effects Assistant

Haruo Nakajima
as
Stunt Double
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Kazukiyo Tanaka
as
Still Photographer

Sadamasa Arikawa
as
Visual Effects Director
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Mutsumi Toshima
as
Visual Effects Art Director