Id white threads?

[wendyzim]

Does anyone know what these white threads in my sw tank are? Are they coming out of the tubes growing on my life rock (in second pic) or is that coraline algae?

[cocoa_pleco]

no idea. Ive got little tube anenomes growing on my LR, but not threads.

Maybe its those little worms that grow from bad water conditions?

[Drumachine09]

I think they are called bristle worms.

[wendyzim]

It took all night, but I've narrowed it down to vermetid snails and/or sessile ctenophore. Both harmless. Phew!thumbs2:

[wendyzim]

I found this picture on the internet. It's more what it looks like then the picture I took.