Id please?

[chad fenner]

Not sure what these are on the rock? Good or bad? Sorry but these are the best pics I could get of them...

 

[NHreefguy]

Feather dusters. Do you ever see fans coming out?

 

[stylaster]

polyp stage of jellyfish, i cant remember exact name off top of my head. The jellies usually never survive as they get sucked into pumps overflows etc.

 

[Armydogracing]

+1 on a feather duster cluster

 

[chad fenner]

Very tiny ones looks like.