In 2004, paleontologist Neil Shubin made the discovery of a lifetime: A fossil, later named Tiktaalik, that appeared to bridge the gap between ocean dwelling fish and land walking amphibians. This high-interest video explains the history of Tiktaalik's discovery, as well as how the human body bears evidence of shared ancestry with ancient fish. Along the way, human rarities such as ancient "gills" and polydactyly (extra digits) are encountered, and much of the evidence for evolution is dramatica