Unidentified Worm

Hi,

I have been able to identify all the hitch hiker worms in my tank, but there's one that's stumping me. It lives in one of the holes in my live rock, so I'm guessing it's a tube worm. It is very, very thin and white. It extends out from the live rock, glides along the live rock (it's eating I guess) and then shrinks back into the hole. I thought maybe it was a spaghetti worm, but in all the pictures I've seen they have a lot of appendages, and this worm only has one. I tried to take a picture, but my camera can't zoom in enough.

Any ideas?

 

sounds like a spaghetti worm to me u dont often see the body check out Worm Hitch Hikers