Classification: Extraterrestrial Sandworm
Description: The sandworms of Saturn's moon titan remain something a mystery. A curious outer mouth protects the creature's true head as it swims through an abrasive sea of sands, only peeling back when the beast emerges to feast on prey. Strangely enough, its diet depends at least in part on interlopers from various afterlife dimensions.
Further Study: "Beetlejuice" (1988)