Sir David Attenborough explores what is being done by researchers and scientists to save the Great Barrier Reef.

David discovers the incredible animals that visit the reef every year.

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.

Behind the scenes of David Attenborough's landmark series in which he visited the Great Barrier Reef. See how Sir David utilized the latest technology to explore the reef.

One of the natural wonders of the world and the largest living structure on our planet.

From the frozen tundra in the north to the dry forests of the equator, Sir David Attenborough narrates a compelling view of the planet. "Planet Earth" was the first natural history documentary to be filmed in high definition, and now a decade later improved technology has made it possible to capture further details, from elusive animal behaviors to previously inaccessible remote landscapes. In addition to exploring the wilderness, the series examines urban dwellings, focusing on animals that have adapted to city life.

A follow-up to the 2001 award-winning show "The Blue Planet," this natural history series sees Sir David Attenborough return as narrator and host. A breathtaking exploration of the world's vast oceans, hourlong episodes capture animals and other living organisms in their natural habitat, presenting viewers with a fascinating insight into what life is like underwater. From tropical seas to the harsh conditions of the Arctic, the makers of "Blue Planet II" use modern filming equipment and techniques to shine a light on areas of the planet that humans have never seen before.

Sir David Attenborough narrates this critically acclaimed series that dives deep into the marine environment of Planet Earth. Although two-thirds of the world's surface is covered with water, scientists know less about the oceans than they do about the surface of the moon. This limited series travels from various coasts to the poles to examine watery denizens ranging from the gigantic blue whale to microscopic coral polyps.

David Attenborough investigates the evolution of nature's flight in this documentary series. Using 3D macroscopic and high-speed filming techniques, the show captures flying mammals, reptiles and insects, as well as birds from all over the world. Attenborough travels from Scotland to Borneo to find the extraordinary species gracing the skies. Created by the award-winning team behind "Natural History Museum Alive" and "Flying Monsters," this series utilizes the latest technology to delve deeper into the animal kingdom to present the natural world's engineering and aeronautics in action.

Produced by the team that created BBC's "Planet Earth" series, "The Hunt" explores the relationship between predators and their prey. Sir David Attenborough narrates this documentary while the cameras follow the animals in their natural habitats. With a specific focus on strategy, the hunters are examined in detail -- from their use of the environment to their sharp instincts and physical prowess. On the other side of the fence are the hunted, which use their senses and defense tactics to flee when they feel threatened. Each episode centers on a different habitat, and the last one focuses on the state of the planet.

"Dynasties" is a documentary by Sir David Attenborough as he goes on a journey behind some of the most celebrated and endangered animals on the planet. Follow the stories of penguins, chimpanzees, lions, painted wolves, and tigers. Each of these animals is locked in a heroic struggle against the forces of nature and their rivals -- they face harsh environmental conditions, dangerous predators, and even the greatest threat: humans. They actively seek to fight for their survival and the survival of their families -- their dynasties.

Veteran broadcaster David Attenborough presents a wildlife series focusing on the natural history of Singapore. Once covered in lush, tropical rainforests, the island city-state has seen increased urbanization across its 63 islands which have pushed the wildlife to adaptation or retreat to the remaining nature reserves. Viewers follow the meditative voice of Attenborough's narration as they witness fascinating creatures such as the flying colugo or the endangered pangolin surviving in the remaining nature preserves. From feisty pistol shrimp along the shores to cat-like civets on the rooftops of city buildings, Singapore is teeming with wildlife hotspots ready to be explored.