longest living shark
400-year-old Greenland shark âlongest-living vertebrateâ 400-year-old Greenland shark âlongest-living vertebrateâ. Read more about sharing. Greenland sharks are now the longest-living vertebrates known on Earth, scientists say. Researchers used radiocarbon dating to determine the ages of 28 of the animals, and estimated that one female was about 400 years old.