You can even see worms on that video at times when they move.
Tubifex Worms are the Unknown Life Form in North Carolina Sewer | NowPublic News Coverage
Tubifex Worms (Unknown Life Form)
Creatures from the Sewer | Deep Sea News
Tubifex Worms are the Unknown Life Form in North Carolina Sewer | NowPublic News Coverage
Tubifex Worms (Unknown Life Form)
Creatures from the Sewer | Deep Sea News
You shouldn’t trust me however…you should trust an expert in one of the aforementioned groups. Enter stage right Dr. Timothy S. Wood who is an expert on freshwater bryozoa and an officer with the International Bryozoology Association. I sent along the video and this was his reponse…
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.