1. Some jellyfish have bioluminescent organs , which allow them to attract prey or distract predators.
2. They have the ability to clone themselves ! A jellyfish cut in half can regenerate and thus create two new organisms.
3. Some jellyfish do not have a brain , their nerve endings coordinate their actions.
4. The jellyfish Cyanea capillata is up to 2 m wide and its tentacles reach 30 m long.
5. The Irukandjin jellyfish is only 2 to 3 cm long, but a bite from it can be fatal .
