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As for what those monster scrotal sacs of doom in some (presumably) North Carolinian sewer could be, Redditors offered up a number explanations, including bryozoa, or “moss animals.”
A few details about who made this video and its location are right there in text supered over the images - Malphrus, for instance, is a real, full-service construction company located in South Carolina. The Shops at Cameron Village are located in Raleigh, NC. The websites for Malphrus and Cameron Village have been registered and active for quite some time, so they are clearly real.