In 1957, Sir David Attenborough first visited and scuba dived on one of our planet’s most extraordinary creations, the Great Barrier Reef. Shrouded in mystery and mostly inaccessible, he always wanted to go back to further explore the ecosystem he describes as “like no other in the natural world”. Sixty years on, using brand-new technology and the latest scientific research, David has the opportunity to unlock the secrets of the Reef as he embarks on a personal journey that reveals the true extent of its diversity, characters and complexity along the way.