Please help me ID these.

[Roy 9121]

I bought this rock from a friend's tank, can someone tell me what these are?

 

[ReeferMaddness843]

I'm gonna say, "what are green button polyps?"

 

[PaReeferJ]

Nuclear palys

 

[Roy 9121]

I'm gonna say, "what are green button polyps?"

Thanks

 

[ReeferMaddness843]

Welcome!

 

[cloak]

Protopalythoas.

http://www.reefkeeping.com/issues/2002-12/fm/index.php