Sunny Priyan
Jellyfish have existed for more than 500 million years, predating dinosaurs by a significant margin.
They lack a brain, heart, and bones but can still navigate their environment using a simple nerve net.
About 95% of a jellyfish's body is made of water, which helps them float effortlessly in the ocean.
Some jellyfish can produce light, creating stunning glowing effects in the water.
Some jellyfish species can regenerate body parts or revert to an earlier life stage, granting them potential biological immortality.
The stings of jellyfish can be intensely painful and, in some species, even fatal, due to the toxins in their tentacles.