Brown Jelly Syndrome (BJS) is, as the name suggests, characterised by a brown mass resembling jelly. It appears to be floating on the surface of the coral and moves. This disease is also often...
wow i havent seen that before. is it possible its not getting enough light? seems to be stretching like a zoa. it looks receded, so it might want to polyp bailout to find a better environment. try moving it to higher light and check if that helps.