Life on Earth

Invasion of the Land (1x6)

Exibido em:: Fev 20, 1979

Some 350 million years ago, evolution reached one of its most crucial stages when fish crawled from water onto the land and became amphibians. Today, newts, salamanders, toads and frogs still survive in great quantities, and there is even one species of frog where the male gives birth from its mouth!