Need ID on possible mushroom

[Sandman99999]

Got this guy as a bonus on a frag of GSPs. Any ideas on the id (little guy in the bottom of the image. Yellow mouth). Thanks!

 

[Garrett0606]

Looks like maybe a ball anenome

 

[AcroNem]

Looks like maybe a ball anenome

It does kind of look like a Corynactis sp.
I also think it could be a small Ricordea yuma

 

[Sandman99999]

Still going with the ricordea. It has expanded horizontally in the last few days. I've never seen anything that looks like anemone tentacles.

Had some GHA on the rock and just brushed it and cooked it with H2O2. The rock is not very happy right now.

 

[MixedFruitBasket]

Pretty sure that's a ricordia.