One of the most unusual and mysterious creatures on our planet, the Greenland sharks, are now also the longest living vertebrate animals known to man. Until recently not much was known about the Greenland shark, including the animals life expectancy, but now researchers and marine biologists from several Universities have come together and made a huge new discovery. Using Carbon-14 dating methods, researchers have calculated the lifespans of these animals by studying molecules in the eye lids of the sharks. These molecules do not change at all since birth which makes them ideal for calculating the lifetime of these sharks. Researchers discovered that the Greenland shark can live to be AT LEAST 272 years. Much has yet to be discovered about this amazing animal, but they will probably be around long enough for us to learn more.