Underwater photographer Brian Skerry takes on a mission to change what people think of sharks.

National Geographic photographer Steve Winter, who has spent his life working to save endangered big cats through his award-winning pictures, now turns his lens on an elusive and deadly predator - the leopard.

National Geographic photojournalist Tim Laman reveals new threats to wild orangutans.

"Move as millions. Survive as one." That's the catchphrase of this seven-part event for which a National Geographic team spent two-plus years recording across 20 countries and all seven continents. Narrated by Alec Baldwin, it tells the stories of many of the planet's species and the journeys they undertake to ensure their survival. The diverse range of animals shown -- many revealing behaviors never caught on film before -- include Botswana zebras, Mali elephants, flying foxes in Australia, Pacific white sharks, and the white-eared kob of the Sudan, thought to have been destroyed during decades of violence.

Dr. Brady Barr, a herpetologist by trade, travels all over the world to study reptiles and other creatures in their native habitats, often risking his life in the process. His mission is two-fold: to collect as much information as possible about the animals he studies and to inform the public about the state of the planet and the risk of extinction many animal species face. And, of course, there's another benefit to all his work: It makes great TV.

Put up your dukes -- er, paws -- and prepare to discover epic, bone-shattering clashes between some of the world's deadliest predators. From lions, tigers and bears to meerkats, mongoose and mice, the series features testosterone-induced battles between some of the biggest, baddest and often surprising fighters in the animal kingdom, revealing the extraordinary motivations and strategies that fuel each incredible brawl.

A look into the animal kingdom.

Dian Fossey changed the way people view gorillas. She told the world how they lived and dedicated years to fighting a battle against encroaching gorilla poachers. Her obsession may have ended up killing her. Three decades after Fossey was murdered in a remote mountain cabin in Rwanda, National Geographic looks back at her life and legacy, from childhood and her early days researching in Congo, through to her arrival in Rwanda, where she spent 18 years studying and protecting the mountain gorilla population. Featured across three parts are extensive use of archival footage and still images, interviews with people who knew and worked with Dian -- including Wayne McGuire, the man convicted in absentia of her murder -- and the primatologist's own writings. The series is narrated by Sigourney Weaver, who won a Golden Globe for her portrayal of Fossey in the 1988 film "Gorillas in the Mist."

"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.

Documenting the daily lives of some of the planet's most extraordinary animals.

Actor James Norton narrates a series exploring America's iconic Wild West, known for its legends and synonymous with Hollywood productions. Miles of desert landscapes, redwood forests and extreme coastlines make up the topography, shaping the lives of the wildlife and inhabitants of the area. Filmed over a two-year period, the camerapeople use the latest technology to capture the location from land, air and sea. Episodes discover the animals and plants that have adapted to life on the sand dunes, including mustangs, coyotes, desert tortoises and cacti.