Which of the following organisms can live both on land and water?

Amphibians have a unique life cycle that allows them to thrive in both aquatic and terrestrial environments. They typically begin life as aquatic larvae (like tadpoles) breathing through gills, then metamorphose into adults that can live on land while still needing moist skin. Aves (birds) are terrestrial, Pisces (fish) are exclusively aquatic, and Mammals are primarily land-dwelling (with some exceptions like whales, but not truly amphibious).