ID on this?

[Neogenesis]

I first thought this to be a acan echinata, but the mouth look wrong, and the growth looks more like a chalice.  If you look close you can see the mouths are green, I'm not sure what it is.  Can anyone help me out here?   

Pardon my sand bed....things are still coming back in shape after the electrical incident.

[chromiumlux]

That appears to be an A.Rotundoflora. I had a small colony a long time ago. Nice addition.

[catmel]

Very neat! Looks like a combo between a closed brain and ricordia