See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. It's the one macabre truth of being human: one day, all of us will die.

Severed body parts from a sea cucumber survived for over three years in a lab, healing themselves and absorbing nutrients ...

Like the elves of Middle-earth, some species on Earth don’t die of old age. The scientific term is negligible senescence, which means they show little or no signs of biological aging. It applies when ...

Some animals age in ways that look very different from the way humans and most other species age. A small group of creatures can slow aging dramatically or even reset parts of their life cycle. They ...

Jellyfish have repeatedly riddled the world of marine biology with its toughest mysteries. The immortal jellyfish might be ...

One ocean-dwelling creature found in tropical waters is known to be able to reverse its own life cycle, cheating death. The jellyfish, Turritopsis dohrnii, was first discovered in 1883, but it was ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A strange, immortal tube-shaped animal has been discovered to ...

Hydractinia, a strange, tube-shaped animal that lives on the shells of crabs, is completely immune to aging. However, the exact reasons that these immortal sea creatures are immune to aging have ...

Some aquatic creatures live longer than humans. At minimum, all of these animals can live more than 200 years. Two immortal animals are jellyfish-like creatures that either restart their life cycle or ...

These animals have adaptations that allow them to live long, endless lives. We all know that ageing is a natural part of life ...