Is this an anemone?

[seagoblin98]

My biggest piece of live rock has had all sorts of cool hitchhikers popping up over the past couple of months. Today I noticed a new critter on it. Looks like an anemone. It's long tentacles feel around on the rock around it. It also stretches out and waves back and forth with its soft tube like body. Can someone please identify?

 

[nautical_nathaniel]

Looks more like a tube worm of sorts than an anemone to me, but it could be anything

 

[DSC reef]

I agree, tube worm/feather duster.