When you buy through links on our articles, Future and its syndication partners may earn a commission. Name: Antarctic scale worm (Eulagisca gigantea) Where it lives: Below 1,640 (500 meters) deep in ...

A small species of scale worm chooses to make its home inside a carnivorous sponge ... Sponges are sessile animals within the phylum Porifera. There are over 9,000 known species of sponge living in ...