The animal that holds the record for the longest average lifespan is the bowhead whale (Balaena mysticetus). Bowhead whales are known to have exceptionally long lifespans, with some individuals estimated to live over 200 years. These estimates are based on the analysis of growth layers in their earwax, called earplugs, which provide insights into their age.
Other animals known for their long lifespans include certain species of tortoises, such as the Galápagos tortoise, which can live well over 100 years. Some species of turtles, certain species of parrots, and certain species of whales, including the fin whale and the sperm whale, are also known for their longevity.
It's worth noting that the lifespan of animals can vary significantly depending on various factors, including their species, size, environment, and individual circumstances. Lifespan can also be influenced by factors like predation, disease, and availability of resources. Therefore, while some species tend to live longer on average, individual lifespans within a species can still vary considerably.