Miniature Tube Worms

[sooz]

My Mom's tank has one rock that is just covered in teeny tiny tube worms - at least that is what they look like. They have loooooong grayish-white tubes that run over the rock or emerge from holes in the rock, and tiny feather-dusterish heads about the size of a pencil eraser. The feathers are a single layer. They are white, and my mom just loves them. I am wondering does anyone else have these and are they actually feather dusters, or something else?

 

[spanko]

Yes they are the norm really.
They are a feather duster worm but the size you see is most likely the size they will stay......

 

[sooz]

Well, they are really cool looking. There are so many of them it almost looks like coral until you get in close.