Just wondering...

[SGTDirk]

I was just wondering what I have growing on my live rock.... That question seems abondant around here.
I really can't post a picture of it as they are too small to really see on the camara. They look almost like feather dusters, but the tubs are like bristles. They are hard like a bristle of a broom. Is it just another type of feather duster?? I have had the live rock for about 3 years now, but of course have added some new corals since then. But the only places I see it growing are on my older live rock. It is growing in several places.
Oh well, just wondering if any of you know what it might be.

[GaryP]

Yea, I have the same thing on my LR. I think its a Bryzoan.

Bryzoans are somewhere between a sponge and gorgonian on the evolutionary tree. Some of the larger ones are sometimes mistaken for corals. Try googling it and see if that is what you are seeing.

[SGTDirk]

Bryozoans look more like coral than these. These look like Feather Dusters. They have individual staulks and are brown.

[JimD]

Possibly Hydroids, difficult to ID without a good pic.

[Instar]

If they are in clusters, they are a type of hydroid. Some have white tentacles and some have brown and they each make their own little tubes to live in.

[SGTDirk]

Instar, that sounds like them. Next question, are they good or bad??