The term finfish is sometimes used to distinguish ordinary (vertebrate) fish from shellfish.
- See the Maryland Department of the Environment's page  for a discussion on why shrimp, crab, and lobster are not categorized as "shellfish."
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- Shellfish News
- Haskin Shellfish Research Laboratory at Rutgers University
- Shellfish Gallery from the Shellfish Association of Great Britain
- Shellfish Facts
- University of Washington Libraries Digital Collections -- Freshwater and Marine Image Bank -- Shellfish An ongoing digital collection of images related to shellfish.