When animals have a slow metabolic rate, they do not age but rather have a prolonged life. Resistance to diseases and genetics are also factors that can contribute to the longevity of an animal.

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.” ...

Greenland sharks, with lifespans of up to 400 years, are the longest-living animals on Earth. They inhabit the cold depths of the North Atlantic and Arctic Oceans. New research reveals their ...