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Dive to the Bottom of the World

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This one-hour special chronicles the dedication of biologists, engineers, geologists and oceanographers as they collaborate to deploy a unique, state-of-the-art deep-sea vehicle. The underwater machine is known as 'Nereus', named after the mythical Greek god with a fish tail and a man's torso and is currently the deepest-diving vehicle in operation. It is designed to function in the conditions of the Challenger Deep, the deepest point of the Earth's oceans, where the environment is harsh and intense. Its mission is to provide researchers with an eye to the bottom of the ocean floor, and retrieve invaluable biological and geological samples for further study. If it succeeds, 'Nereus' will change deep sea exploration forever.