Does anybody know what type if snail this is and what it is doing?

[Somethingisfishy]

Hi all,
Found this snail growing in my Pice reef and was wondering what kind it is. It has grow from a apec it its currant size of an inch and a half. Strang thing it does on a regular basis is shoot white smoke from 2 side pods. Seams to be an Algae graizer from the looks of it. Thank you.

somethingisfishy

 

[flsalty]

That's a stomatella snail. It's spawning.