Unknown Lifeform in North Carolina Sewers in Raleigh at Cameron Village

From what I’ve been reading no one has yet to figure out what these disgusting blob-like creatures are. They are apparently covering the walls of the sewers underneath the Cameron Village shopping center in Raleigh. This could easily be a viral marketing hoax but they look very convincing. Supposedly they might be a form of bryozoans. Either way, they are gross and let’s hope they don’t hatch and kill us all.