Did you know that a whopping 95% of the different kinds of animals in the world are invertebrates, and that most of these animals live in the ocean?!

If you want to learn more about invertebrates, click on the topics below for answers to the most frequently asked questions, or check out the Encyclopedia Smithsonian site on invertebrate zoology.

Alien Species
Cnidarians (coral, anemones)
Crustaceans
   Hermit Crabs
   Echinoderms (seastars)
Mollusks
   Cephalopods (squid, octopus)
   Gastropods (snails)
Sponges
Worms

If you have questions about insects, please go to: http://www.si.edu/resource/faq/nmnh/buginfo/start.htm.

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