you would be correct sir! the "coral" in question however happens to be the reddish brown circular thing in the lower middle of the picture. since switching from my 10w 50/50 to my 18watt par 38 trupop LED fixture though this thing has started to extend what i think are polyps and get white dots in the middle of it. pretty interesting, almost like its growing.the things at the top look like star polyps to me.