The Fish That Walked Out of the Water and Changed Everything on Earth.

Look at your hand. Not metaphorically. Actually look. Those bones exist because one fish made one decision 375 million years ago. YouTube channel    / @apexearthone   Not a species. Not a group. One lineage. One transition. One moment in the history of life on Earth where something crawled out of the water and stayed. Every reptile that ever lived descended from that moment. Every bird. Every mammal. Every human being who has ever drawn breath. You are the outcome of a fish that got uncomfortable. This video covers what the world looked like before land animals existed, why the transition happened in swamps and not open ocean, the discovery of Tiktaalik - a fossil that scientists predicted before they found it, in rocks they predicted, in a time period they predicted - and the question that no one can answer yet: why it only happened once. The last section is the one that doesn't leave you. Because the bones inside Tiktaalik's fin are not similar to the bones in your arm. They are the same bones. Unbroken. Continuous. Reshaped across 375 million years - sitting in your wrist right now. New episodes regularly. Subscribe. #Evolution #Tiktaalik #Paleontology #DeepTime