The gastropods, more commonly known as snails and slugs, are a large taxonomic class within the Mollusca. There are 611 families of gastropods, of which 202 families are extinct, being found only in the fossil record. There are 60,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding and reproductive adaptations of gastropods vary significantly from one clade or group to another. Examples : - Abalone - Conch - Cowrie - Limpet - Slug - Snail ......