What is a jellyfish?

Have you ever wondered what exactly a jellyfish is made of? Get ready for a mind-blowing deep dive into the ocean! In this episode of Science is Not Boring, Mira and Finn uncover the amazing secrets of the brainless blobs that have been swimming on Earth for over 500 million years. That means they are older than the dinosaurs and even older than sharks! Did you know a jellyfish is 95 percent water? They survive with absolutely no heart, no bones, and no brain! Instead, they use a super cool "nerve net" to sense the world around them. Discover the terrifying Lion's Mane Jellyfish, with tentacles longer than three school buses, and learn about the incredibly fast microscopic stinging harpoons they use to catch their food! Plus, we will meet the amazing Immortal Jellyfish that can turn itself back into a baby, and learn how glowing jellyfish actually helped human doctors win a Nobel Prize! You will even find out what happened when NASA sent thousands of jellyfish into outer space. Spoiler alert: they got very dizzy! Tap play to discover why these squishy sea ghosts are true ocean superheroes!