Space Amoeba (1970) is a Science Fiction, Adventure, Horror film that follows 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. Currently, you can watch Space Amoeba on Criterion Channel. Streaming availability may vary by country and platform over time. It has a user rating of 6.4 out of 10 from 53 votes. Fans of science fiction movies may also want to explore similar titles below.