A lot of "what is this?" I notice here...

[flricordia]

Better yet Doc. I bought two, this is the larger, you need to make it over this way and take it home with you.

 

[brikeibur]

That's pretty funny you ask, the "what is this" post before yours was mine....asking the same question for the same coral!! LOL.....here is mine, and yes it is hydnophora.