strange white thing stuck on glass

[tuajia]

Hi guys, this strange white thing recently appeared stuck on the glass. Sorry I couldn't get a better shot, it's at the back wall. It looks like a white pill bug or wood louse and its just stuck there, not moving. Tried poking with my tweezers but it feels hard like rock and i can't move it. Anyone know what it is? Thanks

Edited September 17, 2015 by tuajia
typo

[tuajia]

Update, the thing is mobile. It has moved further back behind some rock. At the same time, I spotted another thing in a hole. Is this a feather duster worm?

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[josephwzr]

First pic could be a stomatella snail.

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[titustitus]

first pic looks like a snail to me. second pic is a feather duster

[tuajia]

Thanks for the info guys. Now I spotted a third surprise... I'm guessing it's some sort of limpet

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[tuajia]

Confirmed! The initial white thing I saw in,my first post is also a limpet, just diff color.

Now a new thing growing on the LR. Looks almost like very skinny mushrooms

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[JMW]

aren't these zoas?

[tuajia]

omg really?! I did think they looked like zoas but i never imagined i would see them growing randomly on LR. I got this piece of LR from the sump of one of the bros here.

[JMW]

I saw something similar in LCK before, the lady told me was zoas. But they do look different don't they? Kinda longish stalks... 

Before we get too excited, maybe wait for some of the experts here to cfm ID