Spawn of the Slithis (1978) is a Horror, Science Fiction film that follows a nuclear leak creates a mutant Slithis sea monster, which terrorizes the variety of pets, winos, and hippies who hang around Venice, California. Currently, you can watch Spawn of the Slithis on Shout! Factory Amazon Channel, Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 4.5 out of 10 from 43 votes. Fans of horror movies may also want to explore similar titles below.