Confirm Spaghetti Worm ID?

[starypotter]

Just spotted this little fella on a shell, poked around a bit to confirmed it was moving on it's own not just with the current.
Not the snail gunk or spiral feather duster worms.

 

[Diesel]

Positive!

 

[Lovemyreef2015]

+1 on spaghetti worm, good cuc

 

[Oliver]

Looks like a spaghetti worm