Jellyfish are not actually fish, but relatives of corals and sea anemones. Scientists believe they got the name jellyfish from their jelly-like, gooey bodies. They are classified as invertebrates because they do not have a backbone or spine.
Jellyfish live in every ocean on the planet and come in a large variety of types, colors and sizes. Most jellyfish have tentacles that they use to sting predators and catch tiny fish and plankton to eat.Learn more about Jellyfish