bowhead whale

A 400-year-old shark is the latest animal discovery to reveal the secrets of long life

A 400-year-old shark is the latest animal discovery to reveal the secrets of long life

With an estimated lifespan of 400 years, the Greenland shark has just been reported to be the longest-lived vertebrate on the planet. This is only the latest of a series of recent findings that push the boundaries of animal longevity, and it raises the perennial question of what factors enable some animals to achieve what we might call extreme longevity – lifespans that can be measured in centuries.