This deep-sea polar worm looks like it can't decide if it's dressed for a glitzy party or a gruesome massacre.

The disco caterpillar is actually a polychaete, a type of deep-sea worm known as a bristle worm, for obvious reasons. There are around 13,000 species of polychaete that live in marine ecosystems ...

Caption A live male specimen of the new species of deep-sea worm, named Pectinereis strickrotti after the lead Alvin pilot, Bruce Strickrott of WHOI who helped discover it. Its feathery appendages ...

The Borealis Mud Volcano, 400 metres below the surface, continuously releases methane-rich fluids, creating a unique deep-sea ...

This new species of annelid worm was found in deep sea sediments near methane seeps off the Pacific coast of central America. Anguillosyllis have an interesting evolutionary placement within Syllidae ...

Sir John Ross lowers a line more than a mile into the North Atlantic and hauls up worms and a large sea star. Norwegians haul up from the deep a sea lily, a living fossil previously found only in ...

Although it was discovered in 1939, very little is known about this deep-sea species. Like other bristle worms, it probably plays an important role in keeping the ocean healthy.