Invertebrate

Invertebrates are animals that neither possess nor develop a vertebral column. This includes all animals that are not part of the subphylum, Vertebrata. Examples of invertebrates include arthropods (insects, arachnids, crustaceans, and myriapods), mollusks (snails, octopuses, squid), annelids (earthworms and leeches), and cnidarians (jellyfish, sea anemones, corals, and hydras).