DISCOVERY HD WORLD

Actor Jake Gyllenhaal assists Bear in showcasing survival techniques in Iceland.

Mykel's and Ruth's rented boat breaks down in the middle of the sea. However, their attempts at survival gets more challenging as they fight dehydration and sickness.

Bear Grylls demonstrates all the techniques and skills that are required in order to stay alive in the dangerous waters of the Everglades.

Survivalist Bear Grylls treks across the Siberian tundra and into the Sayan Mountains, demonstrating a wide range of survival skills.

Bear Grylls embarks on an adventure to the Mojave Desert and conquers the sandstorm in scorching heat. Later, the brave survival specialist is on a quest to find scorpions, rattlesnakes and coyotes.

Bear skydives into Australia's Northern Territory. He will rely on the survival skills honed by the aboriginal people to survive in this sweltering landscape.

Bear parachutes into one of the most remote parts of New Zealand and battles unpredictable conditions as he crosses the country's highest mountain range.

On his next expedition to nature's kitchen, Bear Grylls resorts to drinking liquid from a camel's stomach while devouring whatever wild food he can put in his mouth.

On his next expedition to nature's kitchen, Bear Grylls resorts to drinking liquid from a camel's stomach while devouring whatever wild food he can put in his mouth.

Bear is marooned on a desert island south of Papua New Guinea. He wades across a shark-infested tidal channel and constructs a bamboo windsurfer to make his escape.

Bear is in the Caucasus Mountains driving a snowmobile out the back of a hovering helicopter. Later, he ziplines across a river and trudges swampy wetlands.

Bear Grylls shows how to survive the big island of Hawaii, home to Kilauea, the world's most active volcano and one of the toughest places on Earth.

Bear Grylls demonstrates all the techniques and skills that are required in order to stay alive in the dangerous waters of the Everglades.

Bear Grylls faces the icy peaks of the Chugach Mountains, Alaska, one of the toughest known environments. Bear uses his specialist survival skills and knowledge to journey across Alaska.

Bear travels to America's greatest mountain range-the Sierra Nevada. He uses his knowledge of American Indian survival techniques to build shelters, calm wild horses, and find food.

Bear is marooned on a desert island south of Papua New Guinea. He wades across a shark-infested tidal channel and constructs a bamboo windsurfer to make his escape.

Bear skydives into Australia's Northern Territory. He will rely on the survival skills honed by the aboriginal people to survive in this sweltering landscape.

Bear Grylls embarks on an adventure to the Mojave Desert and conquers the sandstorm in scorching heat. Later, the brave survival specialist is on a quest to find scorpions, rattlesnakes and coyotes.