Holly Molly - Bristle Worm!
So I turned my aquarium light out awhile ago ... but just walked back into the room that we have our aquarium in and flipped on the overhead light. Wow! - to our surprise we saw at least a 8" bristol worm making his way over the live rock.
Any concern with a bristle worm this big? Keep him, trap him, extract him? Could a critter this big make a meal of a shrimp or fish?