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Catalert.png Please copy and paste ' [[Category:Invertebrates]] ' into the end of your article to include it in this category.

An invertebrate is any animal without a vertebral column (spine).

Typical examples found in the aquarium are Sponges, Jellyfish, Flatworms, Roundworms, Sea stars, Sea urchins, Sea cucumbers, Squid, Snails, Crabs and Shrimps (crustaceans), Crayfish and Lobsters.