UPDATE: ZOMG, Freaking Sewer Creatures!
This is allegedly video from the sewers beneath Raleigh, North Carolina showing some weird ass freaky deaky new creatures. I suspect it's fake and gonna prove to be a viral video for Cloverfield 2: Attack of the Head Crabs or some feminine hygiene product. But who knows, maybe it's real. Regardless, I think we can all agree that it would be delicious BBQ'd.
UPDATE: Totally real apparently. According to Dr. Timothy Wood, freshwater bryozoa expert.
Thanks for the video - I had not see it before. No, these are not bryozoans! They are clumps of annelid worms, almost certainly tubificids (Naididae, probably genus Tubifex). Normally these occur in soil and sediment, especially at the bottom and edges of polluted streams. In the photo they have apparently entered a pipeline somehow, and in the absence of soil they are coiling around each other. The contractions you see are the result of a single worm contracting and then stimulating all the others to do the same almost simultaneously, so it looks like a single big muscle contracting. Interesting video.
BURN IT WITH FIRE! Somebody in Raleigh needs to start flushing fireworks down the toilet STAT.
Thanks to Julian, who requests his medium rare with a side of A-1.