What is the longest living animal that can live in water and on land?

The longest-living animal that can live in water and on land is the Galapagos tortoise (Chelonoidis niger). These massive tortoises are native to the Galapagos Islands and are known for their incredibly long lifespans, with some individuals living for over 150 years. They can survive in both aquatic and terrestrial environments, making them unique among animals. Galapagos tortoises are herbivorous and feed on a variety of plants and grasses. Due to their slow metabolism and efficient energy conservation, they can survive for extended periods without food or water.