Marine iguanas live in the Galápagos Islands, off the coast of Ecuador in South America.

They primarily feed on seaweed and spend a lot of time sunning on the rocks, but dive deep into the water to search for food.

Marine iguanas are the only lizards that go out to the sea and consequently adapt themselves to suit this unusual way of life — they have partially webbed feet, special salt glands that remove excess salt from their food and can hold their breath underwater.