Can you id this sponge?

[Jadran]

These guys breached my firewall, made it in..

Now they flourished, popping out all over the rocks...

They look kinda cute, but than again they all do at the beginings.. should i worry about them?

Thx.

 

[MaxTremors]

Pineapple sponge.

 

[Reefing102]

Agreed. Pineapple sponge. Harmless.

 

[Jadran]

Thx guys, judging by all the pictures at forums looks like no question about it... pineapple sponge