Are underwater snails strictly bound to 'under' the water?

Question

I recently bought a little aquarium, which I stocked with live plants to create a sort-of-natural environment.

I haven't stocked the tank with any fish at the moment, but I have noticed some tiny little snails. They must have been attached to the plants and I'm fine with them being there for now. What I am a little concerned about is whether these snails can survive out of the water? I'm currently watching one moving closer and closer to the top of the tank, where there is a small gap to allow air pipes, etc. through.

Is it likely that these snails will venture out of the water, and into my room, and survive to tell the tale?

Can snails found in fish tanks, survive out of water?

Update: snail is breaching the water.

Answer 1

What I've gathered through analysing the comments is that bladder snails (identified as the species in question), along with other species, may go above the waterline but will usually return back into the water on their own accord.

From what I've found elsewhere on the web, they do this to feed or lay eggs, or even just to get out of the water if the quality is particularly poor (more likely if all snails are out of the water as opposed to just the one). Another reason I've found is that quite a few species of aquatic snails use lungs to breathe - and so they are simply going to the surface to do this!

But generally, the snails will return into the water on their own!