He went into my mantis cave and I was sure the mantis would eat him like everything else but all of a sudden the mantis comes running out scared to death! I had to remove the rock soak in freshwater and then break the rock apart to remove him. He was definitely the eunicid worm. I researched and compared him to the pics. I had tried to get him out with my handy tongs and when I did it just broke it's body piece off. I had the rock put in a quarantine with the piece that broke off and the dang thing was still alive when I got up the next morning. How freaky. Thanks everyone. He is gone now and my live rock is in several pieces. Luckily it was a rock in the corner of my nano.
Sent from my SAMSUNG-SM-N900A using Aquarium Advice mobile app