Humans have a relatively long lifespan with a maximum age of around 110 years. However, there are many other animals on earth which can live much, much longer than this.
These include certain reptiles, mammals, fish, and birds. The lifespan of animals is usually measured in terms of the average age that members of the species die at, rather than the oldest age they can reach.
#1 Immortal Jellyfish
This is one of, if not the only animal species on earth which never dies. Members of this species are able to turn themselves from an adult into a baby through a process known as “transdifferentiation”. The jellyfish then reproduces via asexual reproduction, creating hundreds of identical copies of itself, and therefore never dying – in theory!
#2 Ocean Quahog
This species of Arctic clam is the longest living species known to man. Many specimens of the shellfish have been collected that were over 400 years old. The oldest ever know died in captivity aged an incredible 507 years. It was collected during a scientific expedition, and may have lived even longer if left alone.