Question

Which is the only animal that can live in water .land n sky

Answer 1

Thee are quite a few animals that live on land and water. Although I suppose it my depend on what exactly you mean by live on land and water. Amphibians is the obvious one, but there are also ducks, penguins, platypus, beavers, snakes, turtles, crabs, sea lions, walrus, otters, frogs.

Answer 2

Penguin and kingfisher ( kingfisher can not live but only swim).