- This event has passed.
World Jellyfish Day
Jellyfish are in the phylum Cnidarians an ancient group of animals with a history of more than 650 million years. The word Cnidarian comes from the Ancient Greek: knide = nettle, named after a type of plant with stinging hairs. They have soft, hollow bodies, live in water and generally have tentacles.
Fun Fact: Moon Jelly can age backwards! They can revert back into polyp stage and then regrow into an adult again. Moon Jellies can also regenerate lost body parts.