Help id mystical creature

[Rudy438]

Hey guys,
This morning I got up and there was a white tube under my live rock it looked kind of corse and there were too long white tentacles coming out of the tube moving around here are some pics. It is over the little sand hill and under the live rock. Thank you already!

 

[Bkmrsteel]

That would be the live part of "live rock"

 

[Rudy438]

-_- no way!!

 

[Bkmrsteel]

Idk, always thought they where tube worms or something. My rock work is covered in them. Haven't seen any problems from them, and wouldn't know how to remove them if it was.

 

[Petrichor]

I can't see anything in the pictures, but from your description is sounds like Spionid worms. They're good for the tank.