Help something strange coming out from polyp rock

Today as usual I was admiring my aquarium when I noticed somethings in the polyps rock and next to it in the live rock, I dont know if it is a worm or tentacles more like single worms maybe,  about n inch long comin from it. they have black and white stripes and small spike like things running all around the edges, can someone please tell me what this creatures might be?

 

sounds like a bristle worm of some sort a pic would help alot. heres a pretty good link to maybe get a id. http://www.chucksaddiction.com/hitchworms.html

 

Thank you very much, after looking online,  I'm pretty sure is  MICRO serpent star, they say they wont hurt anything?

 

I have a bazillion of those...literally they are ALL over in my rocks.  When I feed my tank my rock looks alive.  Totally harmless.

 

They sound like serpent stars to me too. When I first saw them in my tank I thought they were some sort of worm and tried sucking em out with a baster. They're great scavengers and won't hurt anything at all.

 

if you dont have any other starfish in your tank(linkia etc) and you dont like the little buys buy a Harlequin Srimp he will eat them. But if you do have any other beautiful starfish he will eat those also. I love my Harley, neat to watch and photo, they are truly beautiful animals

 

thank you all!! I didn't expect the help to be so quick, you all have giving me some good advise and believe me, is greatly appreciated!!