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TVGDavid Attenborough's Great Barrier Reef44mSmithsonian Channel
Sir David Attenborough descends at night in the state-of-the-art Triton submersible, the first of its kind, to visit the reef; he meets some of the tiny coral animals that built the reef and helped to turn it into an underwater wonderland.
Sir David Attenborough descends at night in the state-of-the-art Triton submersible, the first of its kind, to visit the reef; he meets some of the tiny coral animals that built the reef and helped to turn it into an underwater wonderland.
How to watch
Available on demand