Greenland sharks live for hundreds of years
While the more than 5 meter long Greenland shark is one of the world's largest sharks, it is also one of the least understood animals on our planet. The Greenland shark's general biology and way of life have been a mystery to biologists for many years. However, marine biologists at the University of Copenhagen have now deployed an epoch-making method to unveil one of the greatest of the mysteries surrounding this enigmatic shark - and have come to an amazing revelation: with a life expectancy of at least 272 years, the Greenland shark has the longest life expectancy of all vertebrate animals known to science.