Id please

[jerseypete]

Have these growing on a couple of my corals. they look like little cotton balls. Have no idea what they are. Hard to see cant seem to get a better pic.

 

[Chopstickpsycho]

Sponges. Completely harmless. Gratz on the filter feeders :)

 

[ygon]

looks like pineapple sponges to me.

 

[jerseypete]

Thanks seem to be getting a lot of them.

 

[finallysalty]

Harmless filter feeders