Coral I.D

[TwiTch18]

Howdy!

I'm hoping someone can help me ID this coral (Not the Zoas). I was thinking it's a chalice or something, but I'm not sure.

Thanks for your help in advance.

 

[IKD]

Looks like an echinata

 

[thamnasteroid]

Acanthastrea sp.; not necessarily echinata