ID Help?

[themissinglynk]

Okay, I am trying yet another board, to see if anyone can help me identify a specific "LiveRock Critter"...

Any help would be greatly appreciated. Others have commented that they have them as well, but have never had problems with them. I just want to know WHAT they are. :)

http://themissinglynk.com/downloads/Aquarium/Live/CrystallineEntity-40pct.JPG

[themissinglynk]

Okay, silly me - the question I am asking is about the "White Crystalline Looking Thingy" dead center in the image.

Thanks!

[Icefire]

feather duster maybe, does it retract?

[JokerGirl]

I believe they are a type of hydroid, but I can't remember for sure.

I've had plenty of them and they never caused a problem. Mine of pretty well disappeared.

[greenbean36191]

It's a foraminiferan. It's completely harmless. Basically it's nothing more than an amoeba with a shell.

[Travis L. Stevens]

You beat me to this by 30 minutes greenbean :) Formaniferan; second vote.