Despite having no brain, jellyfish exhibit complex behaviors. They hunt, escape, and reproduce using only a neural network, with some species even demonstrating learning abilities.
The immortal jellyfish (Turritopsis dohrnii) is theoretically immortal. When aging or injured, it reverses to its juvenile state and can repeat this cycle indefinitely.
Jellyfish have existed for about 700 million years, far older than dinosaurs. They are ultimate survivors, having endured ice ages and mass extinction events.
Many jellyfish possess bioluminescent abilities, producing beautiful light through chemical reactions. This light is used to startle predators or lure prey.
Jellyfish regenerative abilities and transparency have revolutionized medical research. GFP (Green Fluorescent Protein) was discovered in jellyfish and became Nobel Prize-winning technology.
Jellyfish blooms are important indicators of ocean environmental changes. Climate change, ocean acidification, and overfishing are causing increased jellyfish blooms worldwide.
Jellyfish is prized as a delicacy in many Asian countries. It has been consumed in China for over 2000 years and is rich in collagen, believed to have beauty benefits.