Unidentified Coral

[DAftPunker]

Looks like a mushroom to me

 

[olaf]

It has a SKELETAL base and when it shrinks you can see the ridges ALMOST like a plate coral.
I think it is some type of CHALICE.

 

[tsr770]

It's a plating hydnophora, I have a 3.5" round piece sitting on my sand bed. Don't let any other corals get too close or its lights out for them, I have seen 6" sweepers on mine, and its agressive. I only had it that close to the favia and acan for a pic, then back into its isolation corner it went.

 

[YoungReefer06]

I work with hundreds of chalices and can tell you that they are not fleshy at all, and do not retract, unlike yours. However the scattering of mouths/"eyes" does sound chalice like.

 

[danreefman]

maybe if the water quality is not the best you cant tell exacly what it is. Or maybe it is so rare know one has ever seen it.