[https://www.youtube.com/watch?v=K2Eyup8Jk3w](Vide...  ...unique relationship between the pearlfish and the sea cucumber . The sea cucumber is a "walking colon"--an animal that sucks in san...  ...To the pearlfish, that back end is attractive. In search of a good home, it find...

California Sea Cucumber (Parastichopus californicus), California, USA,...  ...here's a kindred spirit: the giant California sea cucumber (Parastichopus californicus) that eats...  ...right: Their first hint that the sea cucumber anus was doin...