The Greenland shark is the longest living vertebrate, with a lifespan of over 400 years.
This species of shark is found in the cold waters of the North Atlantic and Arctic oceans and can grow up to 7 meters (23 feet) long. The exact reason why these sharks can live for so long is still unknown, but scientists think that their slow metabolism, low body temperature, and unique genetic makeup may play a role. Despite their impressive lifespan, Greenland sharks reproduce slowly and are considered a vulnerable species due to overfishing and other threats.
