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

Eunice aphroditois, or the bobbit worm, also called the "sand striker," may not be the king of the ocean, but it's strikingly beautiful, with its changing colors of blue, black, purple ...

Clad in thick, red gear that contrasts with the blue and white landscape, researchers retrieve worms from the frigid waters of the Southern Ocean circling Antarctica. They will bring these squirming ...

Anyone who has a (very rational) fear of unknown creatures lurking in the depths of the ocean ... worms have appeared sporadically in aquariums (!), much closer to home than the depths of big blue.