Growth on live rock

[Ruth]

There is a growth on my live rock in my 12g. Nano tank that I have at work. I don't have a picture of it cause my camera is at home and not work. It is shaped like a barnicle but it casts out an almost spider web like thing that you can then see it reeling in. Once it has done reeling it in it is quite common to see it spitting out what it doesn't want. Anyone tell me what this thing is? It is about 1/2cm. round and sticks out of the rock about the same distance. It started out even smaller but has grown to this current size.

[ref leppard]

HI RUTH
I cannot find the name of it. It is a reef safe V...........snail.
The web it uses for feeding.Thats what I think.

[Ruth]

Even though it never moves? It just started growing in the same place and has never moved. It is like a barnacle attached to the rock. I guess it could be a snail that lives inside. I would be interested if anyone knows the name so I can research it. I am not worried about it being reef safe as it is stationary.

[Majestic_Aquariums]

We had one of those too-kinda cool to see it @ work looking for food. Like you mentioned, it would spin webs to catch food, and then toss the garbage out.
We never did find out the name of it @ the time though :confused:

[Xtasia]

Take a look at this.

http://www.reefs.org/hhfaq/pages/main_pages/faq_rock3.htm

[SeaHorse_Fanatic]

Maybe a "Vermetid gastropod" according to that link. Got one of those too in my tank :biggrin:

Anthony

[Xtasia]

I have one too.. he's kinda gross but cool at the same time...

I almost treated him when I did aptasia because of his ICKY-EWW factor

[Ruth]

I think it is cool. I like how it spits! I think it can lob it further than me.