Episodes 1-3 of this 11-part series. In From pole to pole, this series introduction follows the sun as it traverses the planet illuminating such diverse wonders as a mother polar bear with her cubs, the migration of an African elephant herd, the leap of a great white shark and more. In Mountains, this tour of the mightiest mountain ranges begins with the birth of a mountain at one of the lowest places on Earth and ends at the summit of Everest, taking in some of the planet's most reclusive creatures along the way. In Fresh water, together the waterfalls, canyons, frozen lakes, wetlands and great rivers form an unexplored freshwater world full of mystery, excitement and awe-inspiring sights.