What are these thin brown tubes?

[dtruitt]

I've noticed these things recently. They're all consolidated in one place on the sandbed. Some of them are entirely brown, there are some I couldn't get in the picture with little black bands. They move like some sort of invert, rather than an algae.

Any ideas? I'm thinking they're some sort of worm, but there are so many in one place (and they dont move) that I'm not sure.

Thanks!

 

[Copingwithpods]

I was going to say spaghetti worm but you say they don't move? Don't respond to a poke?

 

[dtruitt]

I was going to say spaghetti worm but you say they don't move? Don't respond to a poke?

Havent given them a poke. They move around, but they never leave that spot.

 

[35ppt]

Redacted

 

[SHNICI]

not sure,

Spaghetti worm.

+1
BTW nice IMG you post @35ppt