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

As the "snow" falls toward the seabed, the worm "casts out a web of snot" to catch it ... for something that looks like the back end of a pig," Osborn said.

A video of a truly bizarre marine worm who appears to be puking its guts out has surfaced on the Internet, intriguing (and sometimes grossing out) the masses. The creature looks like it's a ...