This illustration shows the different life stages of Turritopsis jellyfish. Image via Wikimedia Commons The hydrozoan Turritopsis dohrnii, an animal about 4.5 millimetres wide and tall (likely making ...

The immortal jellyfish, known as Turritopsis dohrnii, has the ability to reverse age and theoretically live an eternal life. Because of its ability to regrow its cells, it could theoretically ...

Jellyfish mortality rates and lifespans vary widely. Some species live only a few hours, others a few months or a few years — and then, you have the immortal jellyfish, but we'll get to them a ...