The Phylum Mollusca
- Introduction to these organisms, with photographs and information on the various classes and their biology.
- http://www.manandmollusc.net/advanced_introduction/advanced_intro_printable.html

Mollusks: Phylum Mollusca
- A diverse group of animals that include cephalopods (squid, octopuses, cuttlefish), gastropods (nudibranchs, snails, slugs, limpets, sea hares) and bivalves (mussels, clams, oysters, scallops).
- http://animals.about.com/od/mollusks/p/mollusks.htm

Micro Shells
- Searchable database of marine shells and fresh-water shells and land snails, over 1,300 species in the world are listed. Many photos to aid identification. Taxonomic scheme shown.
- http://homepage2.nifty.com/bigai/

Mollusks of San Salvador, Bahamas
- Photos of representatives of the major families of bivalves and gastropods.
- http://oceanica.cofc.edu/SanSalMollusks/HomeMollusks.htm

Florida Mollusk Checklists
- Species checklists organized by region.
- http://www.jaxshells.org/florida.htm

Molluscan Pictures
- Images from Singapore, West Malaysia, and southeast Asia. Includes facts on the varied habitats of these creatures.
- http://www.molluscan.com/

Shells of Papua
- Illustrations and information from Alan Hinton's 1974 Shells of Papua New Guinea.
- http://www.papuaweb.org/gb/ref/hinton-1974/

Seashells of New South Wales
- A guide to the sea shells of New South Wales, Australia, with high quality images and detailed information.
- http://seashellsofnsw.org.au/

Phylum Mollusca
- Brief description of each class of Mollusks.
- http://www.meer.org/M30.htm

Keys to the Mollusks of the Hawaiian Islands
- Identification guide to Hawaiian bivalves and gastropods.
- http://www.aecos.com/CPIE/inv_03.html

Catalogue of Mediterranean Seashells
- Listing of major taxa in the region in all molluscan classes with line drawings of some species.
- http://turin.net/catalogue_shell/

Mollusca
- Information from the Tree of Life Project about mollusk systematics with references and links.
- http://tolweb.org/tree?group=Mollusca&contgroup=Animals

Aquatic Mollusca of Illinois
- Online field guide to freshwater bivalves and gastropods.
- http://www.inhs.uiuc.edu/cbd/ilspecies/mollusksplist.html

Nearctica Mollusks
- General information about classes of mollusks with extensive links.
- http://www.nearctica.com/nathist/mollusks/mollusk.htm

Mollusks
- Introduction to the major molluscan classes.
- http://www.cyhaus.com/marine/mollusk.htm

Endangered Mollusk Images
- Pictures of North American clams and mussels from Environmental Education on the Internet (EE-Link).
- http://eelink.net/EndSpp/ESimages/ESmollusks.html

Alabama Mollusks
- Overview of endangered, common, and exotic freshwater and marine bivalves and gastropods.
- http://fly.hiwaay.net/~dwills/alaview.html

Check List of European Marine Mollusca
- This site provides a searchable database that allows the user to search for taxonomic references by taxon, geographical locality, author or keyword.
- http://www.mnhn.fr/base/malaco.html