What are jellyfish categorized as?
All jellyfish are Cnidaria, an animal phylum that contains jellies, sea anemones, and corals, among others. There are more than 10,000 species of Cnidaria, and less than 4,000 of these are Medusazoa—those animals we think of as jellyfish.
Why are jelly fish called fish?
The word jellyfish comes from the nouns ‘jelly’, from the Latin word ‘gelare’ meaning ‘congeal or stiffen’, and ‘fish’, which has origins in the Proto-Indo-European word ‘pisk’ meaning ‘a fish, animal that lives in the water’.
Are jellyfish fish alive?
They are free swimming animals that use their pulsing jelly-like bell to move and use their trailing tentacles to capture prey. Jellyfish are the oldest multi-organ animal, roaming the seas for over 700 million years. Jellyfish are found in every ocean around the world and prefer to live in coastal areas.