A virtual encyclopedia of sea snails. The catalog is organized taxonomically, and contains pictures, common and scientific names, and basic taxonomic information for a large number of species.

Devoted primarily to the nudibranchs of the Philippines, but also contains information and photographs about crinoids (Echinodermata) and reef organisms in general.

Database on cephalopods (octopus, squid, cuttlefish and nautilus), including images, taxonomy, life history, and researchers.

Extensive information about the apple snail family (Ampullariidae).

Molluscan images from Singapore West Malaysia and South East Asia.

General information about the biology of gastropods as well as about the relation between snails and man.

Myths and facts about the giant squid.

Information about cone snails and their neurotoxins.

A plethora of photos and information about Opisthobranchs from the Mediterranean Sea. Also includes nudibranchs from parts of the world other than the Mediterranean.

An educational page devoted to cephalopods (nautilus, squid, cuttlefish, and octopus).

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.

Large collection of gastropod specimen images (over 900 species) from the Philippines, rarely represented in the literature.

Information about octopus behavior, taxonomy, and anatomy.

Includes checklists of the shells inhabiting the islands of Malta and Gozo in the central Mediterranean.

A guide to the sea shells of New South Wales, Australia, with high quality images and detailed information.

Illustrations and information from Alan Hinton`s 1974 Shells of Papua New Guinea.

Overview of endangered, common, and exotic freshwater and marine bivalves and gastropods.

Pictures of North American clams and mussels from Environmental Education on the Internet (EE-Link).

Introduction to the major molluscan classes.

Images of living mollusks.

Information from the Tree of Life Project about mollusk systematics with references and links.