Molluscs
 "A drawer of Irish freshwater molluscs (click to enlarge image)")
Molluscs (Phylum Mollusca) are a very large and important group of animals that includes snails, slugs, clams and squids. Species can be found on land and in the sea and their study is usually split into land and freshwater and marine species. The mollusc (shell) collection is organised first into land and freshwater, then marine, then world species and then systematically.
Image: A drawer of Irish freshwater molluscs
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