"Unveiling the Astonishing Lifespan of Earth's Longest Living Creature: Over 2000 Years!"
The ocean quahog, a clam species, holds the record for the longest-living animal on Earth, with the oldest recorded individual reaching 507 years old. Other long-lived creatures include sponges, which can live for over 2,300 years, and the immortal jellyfish, which has the ability to regenerate and is considered "biologically immortal." The Greenland shark, known for its extreme longevity, can live for around 400 years. Bowhead whales have adapted to live longer by slowing cell division, but this has resulted in smaller testicles and reduced fertility. The oldest known terrestrial animal is Jonathan, a Seychelles giant tortoise, who is currently 190 years old.