Nearly 60 years since his last visit, Sir David Attenborough is back in Australia, sharing the Great Barrier Reef with audiences around the world in this three part-series that uses the latest in film techniques and marine sciences to take audiences to places they never could have been before.

The Reef is home to some of the world's most fascinating animals and Sir David Attenborough captures an array of creatures such as the manta ray, the epaulette shark that walks and the humpback whale that have made the Great Barrier Reef their home.

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 David Attenborough embarks on a journey to the deepest part of the Great Barrier Reef

A long time supporter of Reef conservation, Sir David Attenborough reflects on how the reef has lost almost half of its coral since his first visit and looks at what the future may hold.

In his quest he consults the Reef's top scientists and visits its island research stations where researchers and their teams are trying to help corals cope with the climates rapid change.

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The Great Barrier Reef is the Earth's largest living structure

David Attenborough's Great Barrier Reef is available on Blu-ray and DVD from April 27.

The competition to win a DVD copy has ended.

How do you feel about the rapid decay of Australia's Reef?