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 ...

It has been dubbed the immortal jellyfish. When the medusa of this species is physically damaged or experiences stresses such as starvation, instead of dying it shrinks in on itself, reabsorbing its ...

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 ...