Banded worm?

[madness]

I just discovered a worm coming out of my LR. Its white in color with reddish brown bands around it similar to the coral banded shrimp but not as bright.
Anyone familiar with this worm and is it harmful or good for my tank?

 

[tizzo]

It could be a peanut worm or, more like the shrimps markings, a serpent stars arm. Do a search on those, and see if a pic matches...