Please identify

[leanna]

Hi, does anyone know what these tubes are, and should we be concerned. Thank you

 

[IKD]

looks like green hair algae

 

[bigbugoutfitters]

The little zoa looking tubes?

 

[LeannaBanana]

Hey, nice name

In all seriousness, agree with the GHA and I see some micro brittle arms! Feather duster the bottom of the frame. Does anything come out of the tubes/do they open like a feather duster or zoa? It looks too big to be vermetid to me, but I wouldn't rule it 100% out based on my opinion.

 

[leanna]

Thanks all. I do think the green is GHA, and there is many brittle stars there. I am asking about the tubes. I haven't seen anything like opening up like the dusters, I have noticed they "flinch" when fish swim close to them