Something in my live rock??? help

[channing93]

There is a clear thing in my live rock thats throwing out these tentacle looking things into my sand and over the live rock and pulling sand and whatever else it can bring back to its little hole in the live rock i poked it earlier and it retracted all its little arms I've found two so far and wondering if anyone has any idea what it is? They live in small holes in the rock i know its not a feather duster the tentacles can stretch to like 6-7inches

 

[snakeblitz33]

A pic would be nice.

 

[channing93]

I can try its really hard to see it the only reason i saw it was because i was pulling sand to its hole

 

[channing93]

you can see the little clear strands coming out of the rock there's two places that do this

 

[1guydude]

http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml
Im thinkin its a
Polychaete - Chaetoplerid.
Tube worm
......i didnt copy and paste that no! lol

 

[channing93]

Seems pretty accurate just need to know if I should remove it? I don't want it to kill my coral or anything

 

[1guydude]

no its fine!