Great Barrier Reef with David Attenborough: Builders

Following his visit to the Great Barrier Reef in 1957, naturalist and broadcaster David Attenborough returns and uses the latest filming techniques to unlock the secrets of the natural wonder. In the first edition, he descends beneath the waves at night and uses cutting-edge technology to generate computer scans of the sea floor. He also learns about a complex community of animals, as well as the annual coral spawning, which is responsible for the great diversity in the reef