The Helix aspersa or garden snail is edible. But since A and I have not got around to eating snails yet (or at least not killing them ourselves and then eating them), it thrives in my garden. Wikipedia tells me it is a chief ingredient in skin creams and gels sold within the Latino community and used for wrinkles, scars, dry skin, and acne. It is also served as escargot. In gender talk, it is a hermaphrodite.
aninditasengupta.wordpress.com 
Lovely photographs!