Yeah. He actually put the rbta in the sandbed the night before pickup and the next day, it walked on over to the rock work and attached itself to the back of this piece. He just said there was some type of 'coral polyps' of some type. Looking at it in the bag, I had no idea since it was matching the color of the rock and totally receded (I didn't even think it was really alive even). But when I put it in my tank it got a lot more pink in color. I'll try to snatch more pics...