It almost sounds like something from a fantasy novel: a creature that can turn back the clock and virtually escape death ...

Image via Wikimedia Commons The hydrozoan Turritopsis dohrnii, an animal about 4.5 millimetres wide and tall (likely making it smaller than the nail on your little finger), can actually reverse its ...

The process the immortal jellyfish uses to cheat death is like a form of cloning. If we can adapt it to the human body, it ...

The longest-living animals on Earth are timeless creatures with unique adaptability and ageing mechanisms, allowing them to ...

Turritopsis dohrnii follows a typical jellyfish life cycle, beginning as a larva and maturing into a polyp and then an adult medusa. However, it can revert to the polyp stage in response to stress ...

And one hydrozoan, the immortal jellyfish (Turritopsis dohrnii), seen here in a water drop, has a life cycle that skips death: It reverts from a medusa back to a polyp. How, no one knows.

The immortal jellyfish has the ability to switch back to its... younger self. And that's not it. When the jellyfish goes back into its previous life stage as a polyp, it also creates more ...