I got this one on a two for one. I bought a large clump of red bubble algae for my seahorse tank and noticed that the coral skeleton it was on was not dead. I put the coral in my reef tank and it came back (and I don't know what it is). I noticed a macro starting to grow out of it and naturally thought it was bubble algae but low and behold this is what sprouted out. It is fleshy and I have never seen anything like it.