They're tiny, blobby, butt-shaped, and glow in the dark. What the heck are they? Scientists are still figuring them out.

“To describe this polychaete [a type of segmented marine worm], one simply must use jazz hands — it is the only way to capture this deep-sea worm’s dazzle!” they wrote. Accompanying ...

The carnivorous sponge Chondrocladia robertballardi should make an easy meal of the tiny scale worm Neopolynoe africana, as it would with other polychaetes. But instead it allows this species to ...