byrozoan

	Jockstrip: The world as we know it.
	... Experts said a popular YouTube video of a moving, slimy mass in a Raleigh, NC, sewer depicts a colony of tubifex worms or invertebrates called byrozoan. ...

	Anal-looking ooze just sewer worms
	... University's Cooperative Fish and Wildlife Research Unit. He says the clustering creatures are byrozoan, invertebrates found in both fresh and salt water.

	NC 'sewer creature' stirs interest
	... coordinator believes it to be a cluster of tubifex or sludge worms, while a biology professor says it's a cluster of invertebrates called byrozoan. ...

Source : google.com