Can you identify….

[johnzimm]

Can anyone help me identify these 1/4 to 1/2 inch tube “things”?
I just noticed them so I don’t know how long they have been there. I haven’t added anything new to the tank since I added some small crabs about 6 months ago. They seem stiff. I don’t see them swaying in the current.
The only thing I think they might be are Vermetid snails…
Any ideas?
Thank you, John

 

[kharmaguru]

The only thing I think they might be are Vermetid snails…

That would be my guess but the pictures are not clear enough. Are they maybe green like an algae?

 

[Reefing102]

They could be Vermetids but hard telling. I’m also thinking maybe a clacerous tube worm