The document provides information about moon jellyfish, including their appearance, habitat, diet, predators, reproduction, species, size, body parts, and history. Moon jellyfish typically grow to be 25-40cm wide and live in oceans around the world near coastlines. They eat small animals like mollusks, shrimp, and fish eggs or larvae. Their predators include sea turtles, fish, and humans. Moon jellyfish have been around for over 1 million years.