Life, which first inhabited the seas and then land, is an amazing story. Through investigation of ancient trailblazers such as Tiktaalik, we learn the gradual process by which lungs and legs evolved, and how the creatures of the seas eventually conquered the land. Reverse evolution, from land to sea, is also presented.

Originally released by Film Ideas, 2013. Streaming video file encoded with permission for digital streaming by Infobase on March 15, 2019.

Valley of the Whales (3:41); --Origins of Life (2:47); -- Pikaia (2:52); -- Vertebrate Evolution (3:31); -- Eusthenopteron (4:35); -- Tiktaalik (5:05); -- Acanthostega (3:18); -- Transition to Land (2:09); -- Marine Mammal Mystery (3:51); -- Dorudon (2:32); -- Pakicetus (3:45); -- Forefather of Whales (3:57); -- Credits: The Landing (0:46); .