Invertebrate

Animals that are invertebrate do not have a backbone. According to Britannica.com, "more than 90 percent of all living animal species are invertebrates." 

Insects are also included under this classification.

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Insects are also included under this classification.

Sponge

Video

Naturalist Rudy Mancke explains the sponge animal.
Sand Dollar | Bulls Island Natural Area (S.C.)
Sand Dollar | Bulls Island Natural Area (S.C.)

Photo

• Mellita quinquiesperforata • Flat version of sea urchin • Fused skeletal plate forms rigid exoskeleton (test) • Lives in shallow water, using sand as protection • Male and female cannot be...
Forest Snail | Appalachian Cove (S.C.) | NatureScene
Forest Snail | Appalachian Cove (S.C.) | NatureScene

Photo

• Mesomphix vulgatis • Terrestrial species • Lives coiled in a shell • Thin skin • Oozes along with prominent muscular foot • Feeds with radula • Operculum seals its shell • Stalked eyes and antennae
Moon Jelly | Zoo Minutes

Video

The moon jelly is an invertebrate because it does not possess a backbone. These animals are often referred to as jellyfish, but they are not fish. They are found in all of the oceans except the Arctic...