help iding

[Lilmatty5dimes]

hello i was wondering if anyone could tell me what this is. thanks for looking.
couple with blues on

whites on

 

[Frick]

Possibly a Seriatopora species, aka Birdsnest. Mayne S. stellata. What does it look like when the polyps are retracted?
http://coral.aims.gov.au/speciesPages/species_metadata/0910/view#