They look very similar to that, but without the white swirls in the tenticles. The tenticles are completely clear, but the tenticles are all on the side just like this photo
Cup coral. They dont' really have any color except for the foot. When I disturb them they don't retract into a rock they retract into what a zoo looks like a little, but definately not zoos. The cup coral would make some sense though because they don't really like light, and they do seem more open at night. Aiptasia likes light doesn't it? They are moble however, I put one rock right on the sand and the nem moved out to the open to catch food I would guess. The tenticles are also very straight like the cup and aren't curly like Aiptasia, but they are all completely clear with the white bulbs on the end. I'm trying to get a good pic of some but it's very hard.