How do you tell snails from each other?

In actual fact, snails are a species which are Hermaphrodites - which means they have both male and female sex organs. When a pair of snails mate, they both produce eggs which will grow in to charming baby snails. If you own snails as pets, it's a good idea to give them unisex names - or label one as the male and another as the female. For instance I have given one of my snails a boy's name (Archimedes) and the other a girl's name (Shelly).