Bristleworm

I caught this nasty guy in my tank. I believe is some kind of bristle worm. I had been seeing him for a few days in the same spot. I identified the rock that he was using as a home and luckily it was one I could pick up. When I did, I raised the rock to the surface and turned it around and there it was, coiled up in a hole. I scooped him out with one of my tools. It was actually fairly easy to do, so I know I am lucky. I researched it on the internet and most sites say that it is harmful to corals. Some sites say that they can be harmless and are good scavengers. I decided to not take chances. Especially since I think he ate my red sea pulsating xenias.