Spotting

I've moved this snail from the Arthropod category to the Other category for you. Snails and slugs are Mollusks. Arthropods have an exoskeleton and jointed limbs in at least one phase of their life. Think dragonfly, bee, crab, and ant.

pretty shell

Thanks

Could be a "White-lipped snail" (Cepaea hortensis) [http://en.wikipedia.org/wiki/White-lipped_snail] or a "Grove snail" (Cepaea nemoralis) [http://en.wikipedia.org/wiki/Grove_snail]. It's hard to say, if you do not see the lip.

Nice sharp picture!