I just wanted to share my Christmas tree worm rock. From everything I have read and heard, it is pretty hard to find these anymore, let alone with the worms thriving in a rock with no live Porites coral. I have had this rock for 2 years and the guy I got it from had kept them for 2 years before I got it, also with no live coral. I have about 17(ish) worms in this rock that is roughly the size of a baseball. These are my absolute favorite things in my tank so if you guys/gals are keeping them, lets see the pics!