What are these?

[UnnamedReef]

Went looking at my rocks closely today and I noticed some translucent tube-like things sticking out from the rocks. They don't appear to move.

Pretty sure the second photo is a small aiptasia, but any idea what the tubular things are?

 

[ieatbugman]

They look like pineapple sponges and some white sponges. @ISpeakForTheSeas could tell you more. They aren’t harmful as far as im aware though

 

[UnnamedReef]

Thank you! Saw some photos online and they definitely could be pineapple sponges

 

[ISpeakForTheSeas]

They look like pineapple sponges and some white sponges. @ISpeakForTheSeas could tell you more. They aren’t harmful as far as im aware though

Nailed it - pineapple sponges (genus Sycon) and some other sponges; harmless filter-feeders. Pineapple sponges typically boom then bust in population and end up going away on their own.

 

[ieatbugman]

Thanks for replying, i know you get tagged a lot

Nailed it - pineapple sponges (genus Sycon) and some other sponges; harmless filter-feeders. Pineapple sponges typically boom then bust in population and end up going away on their own.

 

[ISpeakForTheSeas]

Thanks for replying, i know you get tagged a lot

I'm happy to help when I can!