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 ...

Jellyfish are known for their serene nature, drifting gracefully through the ocean's depths. Jellyfish belong to a group of animals called Cnidarians, and one particular species, Turritopsis dohrnii, ...

These animals have adaptations that allow them to live long, endless lives. In fact, there are certain species that can live for an extremely long time and show little or no signs of ageing. This ...

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 ...

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 ...

An Atlantic comb jelly known as the "sea walnut" has the ability to reverse its own aging process, a new study suggests. When food is scarce or the sea creature is injured, the gelatinous invertebrate ...

Hydra, specifically Hydra vulgaris, are unassuming creatures. At their largest, the freshwater cnidarians (relatives of jellyfish) are just about a centimeter long. Their miniscule bodies are simple, ...

Most living creatures are bound by the fact of birth, aging and death. Few, however, have evolved to break the typical life cycle. The aptly named immortal jellyfish (Turritopsis dohrnii) is one such ...

This jellyfish is very small in size. Its height and width are about 4.5 millimeters, which is less than the size of a little fingernail.

Jellyfish and sea anemones display human-like sleep, supporting theories about sleep’s role in preserving neurons, even ...

A strange, immortal tube-shaped animal has been discovered to regenerate a whole new body from only its mouth to avoid getting old. "Studies like this that explore the biology of unusual organisms ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...