Bivalvia
Bivalves - Taxonomy on a Half-Shell, Field Guide to Freshwater Mussels of the Midwest, Freshwater Mussel Genera of the World, North Carolina Freshwater Mussels, Oyster Reefs, Tennessee Freshwater Mussels, The Eastern Oyster: Crassostrea virginica, The Zebra Mussel, Unio Gallery
Cephalopoda
About Octopi, Amazing Cuttlefish, Cephalopod International Advisory Council, Cephalopoda, CephBase, Chambered Nautilus, Cuttlefish: the Sentient Cephalopod, EuroSquid, Giant Squid, Giant Squid (Architeuthis Clarkei)
Gastropoda
Nudibranchs, Prosobranchs, Pulmonates, ABMAP: The Abalone Mapping Project, Class Gastropoda, Class Gastropoda, Eurasia Shells, Freshwater Snails Of Florida, Gastropoda of Montana, Gastropods, Hardy's Internet Guide to Marine Gastropods, Living Fossils of the Deep, Mollusks of the Southwest
Scaphopoda
Class Scaphopoda, Introduction to the Scaphopoda, Scaphopoda, Scaphopods, The Scaphopod Page
Alabama Mollusks
Overview of endangered, common, and exotic freshwater and marine bivalves and gastropods.
Aquatic Mollusca of Illinois
Online field guide to freshwater bivalves and gastropods.
Aquatic Mollusks of North Dakota
Distribution information and photos for 44 species of mussels, pill clams, and snails.
Catalogue of Mediterranean Seashells
Listing of major taxa in the region in all molluscan classes with line drawings of some species.
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.
Endangered Mollusk Images
Pictures of North American clams and mussels from Environmental Education on the Internet (EE-Link).
Florida Mollusk Checklists
Species checklists organized by region.
Freshwater Molluscan Shells
Extensive systematic information about freshwater gastropods and bivalves.
Keys to the Mollusks of the Hawaiian Islands
Identification guide to Hawaiian bivalves and gastropods.
Live Seashells Gallery
Images of living mollusks.
Malacology in Latvia
Information on all aspects of the study of mollusks in Latvia.
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.
Mollusca
Information from the Tree of Life Project about mollusk systematics with references and links.
Molluscs of Malta
Includes checklists of the shells inhabiting the islands of Malta and Gozo in the central Mediterranean.
Nearctica Mollusks
General information about classes of mollusks with extensive links.
Phylum Mollusca
Information about mollusks from the Animal Diversity Web.
Seashells of New South Wales
A guide to the sea shells of New South Wales, Australia, with high quality images and detailed information.
Shells of Papua
Illustrations and information from Alan Hinton's 1974 Shells of Papua New Guinea.