?feather duster

[memphisfish]

I recently bought at a frag meet a nice piece of LR with 5-6 mushrooms on it. The day after adding it to my tank I noticed these guys. In case the picture does not help. The have ~5-8 leafs coming out of a very small tube. There are about 15-20 in a tight cluster. They are not changing in size and at night they disappear. Are they some type of tube worm/ flower duster. Thanks.http://reefcentral.com/gallery/data/500/109873DSC_0001.jpg

[The steven liu]

The picture is kind of dark, but they sure don't look like barnacles so I vote for feather worm.

[LeslieH]

Worms are my specialty but I can't be sure from the picture that these are really feather dusters. More detail would be helpful.

[memphisfish]

Cornularia species I think.