A laboratory image of Chaetopterus pugaporcinus, aka the "pigbutt worm," an unusual ... crustaceans, jellies, and sea slugs each time they venture into the ocean’s deepest, darkest haunts.

Inside deep-sea coral in the Pacific ... a new species of marine bristle worm, Eunice siphoninsidiator, was discovered living within the structure of glass sponges. These tube ambushing worms ...