David Attenborough's Rise of Animals: From the Seas to the Skies

Part one of two. The naturalist explores the evolution of vertebrates over the past 500 million years, beginning with a look at how remarkable advances allowed primitive fish to make the radical move on to land, and then take to the skies with the advent of flight. He uses fossils of both ancient and living species combined with CGI and film to chart their journey out of the water to populate all corners of the globe