An Astounding Countdown of the 18 Creatures Blessed with the Longest Lives on Earth
The Ocean Quahog

Breaking into the top 10, we have the Ocean Quahog. This clam species holds the record for the longest-lived animal with a known age, with one individual, named Ming, living to be 507 years old. The Ocean Quahog's longevity is attributed to its slow growth rate and the cold, stable environment in which it lives.