When the medusa (the adult stage) of the immortal jellyfish (Turritopsis dohrnii) dies, it sinks to the ocean floor and ...

The idea of living forever has fascinated researchers, storytellers, and scientists for centuries. While immortality remains ...

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 ...

What most of us recognise as a jellyfish is actually the final stage of their life cycle, known as the medusa stage.

Some species never grow up; they remain branching colonies of polyps. And one hydrozoan, the immortal jellyfish (Turritopsis dohrnii), seen here in a water drop, has a life cycle that skips death ...

Turritopsis dohrnii follows a typical jellyfish life cycle, beginning as a larva and maturing into a polyp and then an adult medusa. However, it can revert to the polyp stage in response to stress ...

Almost by chance, researchers in Norway found adult comb jellies reverse their development and become larva again when stressed by starvation. It helps them survive because larva eat less than the ...

The Turritopsis dohrnii is a tiny marine jellyfish measuring less than 5 mm in diameter. What makes it particularly intriguing to scientists is its nickname: the “immortal jellyfish.” ...