I didn't know that serpent stars ate bristle worms, I thought there were only a few creatures that ate them. Apparently the bristle worm(4-5 inches long and as thick as the stars arm) didin't realize that serpeent stars ate them either because it just laid there while the serpent star crawled on top and grabbed it. Sorry if this is a well known fact but I didin't know it and I see sometimes that people ask what will eat bristle worms so I thought I'd share this.