What are these?

[crimper]

I noticed a bunch of white organisms attached to my rock, they look like tiny white pineapples, however my fishes aren't interested on chomping them

Can anyone identify these please.



magnified



Thanks for looking and appreciate your inputs.

[JDigital]

Pineapple Sponges by the looks of most of them... Good to have IMO.

[FishyFishy!]

Those are sponges, as JDigital said, commonly called the pineapple sponges. Good filter feeders. That hair algae on the other hand...

[crimper]

Thanks for your replies. Good to hear that they are good creatures lol

[tlhood]

They be pineapples... under the sea....

[kien]

SpongeBob Square Pants houses.