It moves slow, only comes out at night from what I can tell. Its white with tan on its back and has a scalloped appearance. There seem to be little spikes on its back that remind me of SPS polyps. These are the best pictures I could get out of the 25 or so I tried taking because of where the critter was at. I do/ or did have Berghias in my aquarium and I know it's not one of those. It's the white blob in between the corals. It is about the size of a dime, maybe slightly larger but not by much. NO WALT...............It's not a sea monster either......
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