In this episode of Nature's Weirdest Events, there is something strange in the water in the Caribbean, a four-foot worm hides in a fish tank, and a tick is turning some Americans vegetarian.

Originally released by BBC, 2015. Streaming video file encoded with permission for digital streaming by Infobase on May 22, 2019.

Swimming Swine (6:11); --Bobbit Worm (5:17); -- Killer Whales (6:27); -- Lone Star Tick (6:35); -- British Stoats (4:36); -- Tarantula Hawk Wasp (4:50); -- Southern Cassowary (5:42); -- Urban Oasis (5:25); -- Algal Bloom (4:15); -- Credits: Nature's Weirdest Events: Series 4: Episode 1 (0:26); .