What it’s like to be...
An immortal jellyfish
The wispy creature has humanity’s most sought-after secret—and it might not even know it
CAL FLYN ILLUSTRATION BY KATE HAZELL
When I try to picture death and understand my life in relation to its ultimate, inevitable end, I always come up short. The impossibility of death in the mind of someone living—to borrow a phrase from Damien Hirst—brings us hard up against the limitations of imagination. Of course, I will die one day, whether I can conceive of it or not. And so will almost every living creature on this Earth.
But perhaps not quite all. Several species display remarkable feats of survival, withstanding extreme conditions for years on end. Tardigrades, for example, the millimetre-long micro-animals known as “water bears,” have been known to survive the radiation of space flight, and temperatures from up to 150C to absolute zero. Tardigrades have been kept for eight days in a vacuum, then in helium for three more, and still come back to life afterwards.