Just got this monti in Okinawa

[jason78]

It is green with red polyps.

 

[Peter Eichler]

Looks like it could be a porite, possibly very similar to the sand dollar "monti".

 

[Pife]

Looks like it could be a porite, possibly very similar to the sand dollar "monti".

Looks like my sand dollar montis in low light.

 

[Eastone]

it's almost definitely porities, encrusting montipora have a growth ring free of polyps, where as porities grow polyp-first