This Fish Lives Inside a Sea Cucumber's Butt...
[https://www.youtube.com/watch?v=K2Eyup8Jk3w](Vide... ...ells us about the unique relationship between the pearlfish and the sea cucumber. The sea cucumber is a "walk... ...floor, then squirts waste out the back end.To the pearlfish , that back end is attractive. In search of a good... ...ct, it's such a comf...
https://www.neatorama.com/2016/04/14/This-Fish-Lives-Inside-a-Sea-Cucumbers-Butt/
