Space Amoeba

The Helios 7 space probe is sent on a mission to study the planet Jupiter. The probe is overtaken by the Space Amoeba, an amorphous parasitic extraterrestrial. The probe returns to Earth and crashes into the South Pacific. The Space Amoeba leaves the device and inhabits the body of a cuttlefish causing it to mutate. A photographer, named Kudo, and his entourage land on Selga Island for a photoshoot. Kudo and his friends discover it to be inhabited by giant mutant monsters created by the aliens in an attempt to conquer the world.