Help ID this green thing please

[Rusalochka]

It has no feeders, but I do see something that reminds me tiny mouths... My only idea it's a monti growing over some old sps skeleton. But it just doesn't look like it...

 

[C.Eymann]

hard to tell from pic quality, the blue is washing everything out.

Looks like an unhappy/ retracted/ receded hydnophora to me

 

[Rusalochka]

hard to tell from pic quality, the blue is washing everything out.

Looks like an unhappy/ retracted/ receded hydnophora to me

Thank you! Finally! Yes, the pic was too bad, but couldn't make a better one to save my life