National Geographic Wild HD

Alaskans have to divide and conquer to stockpile resources for the long winter ahead.

As summer comes to an end, Alaskans make one last push to prepare for the brutal winter ahead.

Up against countless obstacles, rural Alaskans must work hard to survive.

Alaskans must overcome life-threatening obstacles to endure dark winter.

Arctic survival breeds ingenuity in the lives of Alaskans.

Determination, dedication, and grit.

As seasons change, Alaskans must be vigilant in their quest for survival.

With spring coming, Alaskans must prepare for the changing landscape.

Early spring brings change and deadly risks to rural Alaskans.

Exploit turtle chaos with tiger sharks and withstand pressure with ghost sharks.

Stalk prey, wait for the perfect strike and go on epic migrations with sharks.

Hoping to add a new weapon to his fishing arsenal, Oliver hits the water with Carl, Matt and a new set of slinky pots, and they're in for a shock.

Milestone achievements are only possible with steep challenges in Port Protection; Carl and Matt pull a 3,000-gallon barrel up a cliff.

With the help of Troy and Sarah, Squibb tackles a ticking time bomb that threatens to kill all life in the Bay.

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Soaring cliffs, canyons and water shape a diverse wildlife refuge in Zion.

From glacial peaks to coastal rainforests, Olympic has rich biodiversity.

An American trailblazer, Yellowstone is renowned for its natural wonders.

An ecological treasure of North America, the Everglades brims with life.

From volcanic origins, Katmai's lush expanse boasts more than just bears.

Winter bears down on Alaskans, who make last-minute preparations for the return of the freeze.

Alaskans work to prepare for the upcoming brutal weather; Chip constructs a mobile tent frame.

As winter nears, Alaskans' preparations for the freeze begin to fall apart; the Hailstones fear they may have missed their chance to hunt caribou and stockpile meat for the winter.

Alaskans scramble to secure their livelihoods as the freeze begins; Sue Aikens returns to Kavik to find a dangerous predator lurking just outside of camp.

Alaskans need to adapt and shift their plans due to unpredictable winter weather.

Alaskans struggle to get through the everyday grind as a long, dark winter looms ahead.

The looming winter forces Alaskans to tackle obstacles to ensure a prosperous winter.

Alaskans must travel far and wide to obtain resources vital for survival in the dead of winter.

Alaskans trap and hunt for essential food and fur to survive the dark winter.

In anticipation of the coming spring, Alaskans pursue scarce resources.

As winter winds down, Alaskans encounter roadblocks in their struggle for survival.

From volcanic origins, Katmai's lush expanse boasts more than just bears.

An ecological treasure of North America, the Everglades brims with life.