Did you know that the longest-living vertebrate on Earth is the Greenland shark? These deep-sea predators can live up to 500 years, surpassing all mammals and birds in their incredible age. But sharks aren't the record-breakers. The Arctica islandica clam, nicknamed Ming, lived to be 507 years old, found off the coast of Iceland. It's the oldest known non-colonial animal. Its shell rings tell a story. And what about immortality? The Turritopsis dohrnii jellyfish, or "immortal jellyfish," is capable of reverting from adulthood to its polyp stage. This allows it to effectively cheat death, theoretically living forever in lab conditions. There are champions on land too. Meet Jonathan, the Seychelles giant tortoise. He hatched around 1832 and still lives on St. Helena. In his lifetime, he has outlived eight British monarchs! But the real record-breaker is the glass sponges, which live in the frigid waters of Antarctica. Some have been found to live for over 10,000 years. Their slow metabolism allows for incredible longevity. Consider the age of our planet.