Greenland sharks live for hundreds of years

The 5 meter long Greenland shark's general biology and way of life have been a mystery to biologists for many years. However, marine biologists 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.