Can you identify this calcarerous feather duster or tube worm?

[Scopus Tang]

Had this guy for about three years now. It's grown from a very small tube worm to about 3/4" in diameter with a hard calcerous tube about 3 or 4" in length. I've gotten some additional babies off it as well. Just wondering if anybody knows what the genus species on this one is?

Here's a picture of one of what appears to be "offspring" from it;

 

[rick rottet]

you might try a search starting with serpulid worms or sabellid worms and see where that takes you.