Animal that lives a longer period of time?

The immortal jellyfish (Turritopsis dohrnii) is the only known animal that can revert to a sexually immature, colonial stage after having reached sexual maturity. This process is known as transdifferentiation and it allows the jellyfish to potentially live forever.

Other long-lived animals include:

- Greenland shark: estimated lifespan of 272 years

- Bowhead whale: estimated lifespan of 200 years

- Galapagos tortoise: estimated lifespan of 150 years

- Koi fish: estimated lifespan of 50 years