Has anyone seen this worm before

[reefjunky24]

Hey guys been trying to identify this worm there are actually 2, I first found them before on one of my corals thontheyndidnt seem to be bothering it I decided to remove them cause I didn't want to take the chance a few weeks later and I'm cleaning the tank and I find these too on one of my rocks, I can't seem to identify them. They are all white, almost fuzzy looking and don't seem to be a bristle worm but not sure any help would be great don't want a coral killer on my hands

Thanks


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[Connie]

Worm Hitch Hikers

 

[mike007]

Look like bristle worms.