BBC
Bbc: Nature Wildfacts: Common Snail, Garden Snail
See what new things you can learn about the common garden snail. This site provides a detailed fact sheet and colorful photos.
Regents of the University of Michigan
Animal Diversity Web: Phylum Mollusca (Mollusks)
A great, detailed description of mollusks. Discusses parts of their external and internal anatomy and their functions, and lists several characteristics of mollusks. Tabbed pages include pictures, specimens and classification.