Help identifying snail looking creature

[wd2424]

Hi, any idea what this is? I’ve got. Few conchs as well as multiple types of snails. Could this be a baby Conch?

 

[uhgster1]

Stomata, good snail

 

[wd2424]

Where would it have come from? I have dry rock and don’t have any other snails of that type.

 

[Nano sapiens]

Probably snuck in unnoticed on a frag plug.

 

[AFHokie]

I started with dry rock, never put in a stomatella but saw one a couple months into the tank life. Now, 8 months later after lights out my glass and rock is covered with literally hundreds of them. In a 25 gallon tank it looks like an invasion.