So with this one, I have literally no idea where to begin with the ID, it could either be an LPS or a softy. I got it from a tank breakdown in denver, and looking over his list of corals I couldn't find anything that really fits the description. I believe it is on a piece of liverock, and it seems to be covering it more than anything. That piece of rock rising out of it was originally covered in hair algae but in the time that it has been in my tank the algae has retreated to be replaced by new polys. Let me know what you think.