Salmon, brown bears, bald eagles and humpback whales inhabit Alaska's Glacier Bay.
The unique and delicate ecosystem of Tasmania, home to wallabies, quolls, tiger snakes, kelp forests, Huon pines and the famous Tasmanian devil.
The struggle to survive in Costa Rica along the beaches and in the forests, from giant crocodiles fighting to pass along their genes to howler monkeys searching for food.
The ecosystemic balance that has been achieved in Yellowstone National Park, the nation's first such sanctuary, following the reintroduction of wolves.
The story of southern India's free-roaming Asian elephants, considered the incarnation of the god Ganesh, begins with the birth of a baby pachyderm.
Serval kittens, sibling cheetahs and wildebeest calves try to avoid predators in Africa's Ngorongoro Crater.
An isolated peninsula is home to Siberia's grizzly bears, bighorn sheep, silver foxes, walruses, seals and sea lions.
Thailand's lush jungles hide tigers, elephants, white-handed gibbons, cobras, flying snakes and lizards, while its surrounding waters support coral reefs, sharks, manta rays and octopuses.
Exploring the Colorado Plateau, a geological wonderland running through Utah, Arizona and Colorado that was created by the forces of nature.
The saltwater alligators, wallabies, pig-nosed turtles and other creatures that call Kakadu National Park, a limestone plateau carved by two Australian rivers, home.
The unusual animals that have made the rain forests of Borneo, the world's third largest island, their home.
South Georgia, an island east of Cape Horn, is home to penguins, seals and albatross.
The evolutionary path taken by Madagascar after its split from Africa 100 million years ago that has produced chameleons, mongooses and lemurs.
The marine life that thrives in the rich coral reefs in the waters of Palau, an archipelago of more than 200 islands.
The Land of the Thunder Dragon, locked away in the Himalayan Mountains between Tibet and India. Narrator: Donald Sutherland.
The relative paradise of Africa's Etosha turns deadly during the dry season, with only the ever-watchful vultures finding it easy to survive.
A rain forest exploration in the guise of the 7,000-square mile Manu Biosphere Reserve in Peru, home to the Amazon's most endangered species.
The flora and fauna that live on Africa's southwestern coast where the Namibian Desert and the Atlantic Ocean's frigid Benguela current meet, creating a unique mist-covered landscape.
Filmmaker Jeff Foott documents the bizarre creatures and extremes of mountains, arid steppes and sandy seashores that characterize Patagonia in southern Argentina.
Filmmaker Bruce Reitherman documents a year in the life of Alaska's Mount McKinley and its wildlife, including wolves, caribou, Dall sheep and grizzlies.
Tigres vivem em um palácio abandonado no coração da Índia.