The worm is a nemertean, a group of soft-bodied marine predators found from tide pools to the deep sea. Its species is ...

Acorn worms live in burrows on the seafloor so you’re not likely to ever see one. But you may see their absolutely enormous piles of poop. Snorkelers and divers have noted them for years and Nat Geo ...

Researchers have discovered three new species of luminescent Polycirrus worms that emit blue-purple light. They named two of them after glowing creatures in Japanese folklore, and the other after the ...