What is this?

[deneed4spd]

Lately im interested in SPS that have huge polyp extensions and saw this one at BRS office.

http://i1208.photobucket.com/albums/cc376/deneed4spd/hairy.jpg

[RyanTurner]

Some kind of green acropora. It's not a millepora though, maybe a staghorn? Green ones are very common though. You could fill a tank with hundreds of different species of acropora that are green. It's the other colors that are harder to find :)

[Stoneyj33]

My guess is a humilis or stag.

[clownnut]

Hydnophora sp maybe.