The original creature that was damaging my acro lokani came back. It seems to advance very quickly on the coral flesh and destroy whatever it's attached to. This time, I was able to peel it carefully off the surface of the acro and take a 16x photo with a magnifying glass. After photographing it, I rubbed it between my fingers to get a feel for the texture. After rolling it around, I was basically left with what felt like very fine sand. It's similar to a sponge in a way. Hopefully, these photos will help.