Visitors

Das Great Barrier Reef vor der Nordostküste Australiens ist das größte Korallenriff der Erde und eines der artenreichsten Biotope unseres Planeten. Unzählige Meeresbewohner sind in diesem einzigartigen Ökosystem, das zum UNESCO-Weltnaturerbe gehört, zuhause - darunter 1.500 Fischarten, vom Aussterben bedrohte Dugongs sowie die seltene Grüne Meeresschildkröte

In this second episode, David Attenborough continues his exploration of the Great Barrier Reef, aboard the research vessel Alucia. He discovers the creatures that visit the reef every year, from birds to whales, some travelling thousands of kilometres to get there. Using the latest technology, David dives into the shark-infested waters of Osprey Reef in the Triton submersible. Sixty years after his first visit to Raine Island, he returns to the nesting grounds of the green sea turtle and at Lady Elliot Island marvels at manta ray cleaning stations. New tracking technology allows David to follow the story of visitors like the dwarf minke whales. Stunning satellite imagery and computer animation reveal their journey and David discovers their surprising reasons for returning and why the reef is vital for their survival.