Jules Casey, a diver based near Port Phillip Bay, Victoria, recently captured footage of worms that she was unfamiliar with squirming around the bay’s waters.Casey posted a video to Instagram on December 17 showing the creepy crawlers wriggling around in figure 8s and then releasing a substance.Commenters speculated as to what the creatures could be. One follower mentioned the worms could be naval shipworms, while others suggested they were a type of polychaetes.Casey, a marine photography enthusiast, regularly shares footage shot in the waters of Port Phillip Bay, near Melbourne. Credit: onebreathdiver via Storyful