Worm ID please - pics this time!

[o2zen]

I have some new Tonga rock in my tank and it was QT'd for about two weeks with nothing showing up on nightly checks.

Tonight I found what looks like a 4 inch long worm (more hidden behind rock) that was black/brown and white striped. When I flashed the light on it the thing retracted by inverting into itself.

The first one is when it first hit with the light and the flash. The second is as its inverting into itself and retracting.

Thanks for your help.

 

[greenbean36191]

It's a harmless peanut worm or sipunculan.

 

[o2zen]

Thanks, that is a good thing to know.