Gastropods form a major part of the phylum Mollusca. Gastropods are more commonly known as snails and slugs, and include those that live in the sea, in freshwater, and on land.
Gastropoda is the most highly diversified class in the phylum Mollusca, with 60,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding and reproductive adaptations of gastropods vary very significantly from one clade or group to another. Therefore, it is difficult or impossible to make more than a few general statements about these topics that are valid for all gastropods.
There are 409 recent families of gastropods. Fossil gastropods represent another 202 families. The gastropods include many thousands of species of marine snails and sea slugs, as well as freshwater snails and freshwater limpets, and the terrestrial (land) snails and slugs.
The class Gastropoda has an extraordinary diversification of habitats. Representatives live in gardens, in woodland, in deserts, and on mountains; in small ditches, great rivers and lakes.
Source: en.wikipedia.org/wiki/Gastropoda - 07.05.2010
Pastels, gentle glance and transparency - who would these terms associate with Gastropods?