Gezora, Ganime, Kameba: Kessen! Nankai no daikaijû (1970)

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.

Directed by: Ishirō Honda

Starring: Akira Kubo, Yukiko Kobayashi, Atsuko Takahashi, Yoshio Tsuchiya, Tetsu Nakamura, Sachio Sakai

Links: IMDb, Movie posters, Movie stills