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Witness the sensational sight of the world's largest mammal migration, as up to nearly one and a half million wildebeest travel across the Serengeti. Subscribe: Watch more: Planet Earth Blue Planet Planet Earth II Planet Dinosaur Waterhole: Africa's Animal Oasis In a world-first, remote cameras are half-submerged in a specially built waterhole in Africa. What secret animal behaviour and new science will be revealed? Water is vital to all life, but how does an ecosystem evolve around a brand-new source? Rigged with a state-of-the-art camera system to film around the clock, this new waterhole in a water-stressed region in Tanzania doesn’t just give a lifeline to wildlife. It also provides an extraordinary eye-to-eye view of the action as animals including lions, baboons, elephants, giraffes and cape buffalo gather around it. As the seasons shif
