Episode 1

Jeff Corwin begins his journey on America's highest mountain, Mount McKinley, and then travels through the 6 million acres of Denali National Park in his search for the ultimate prize, Denali's grizzly bears.

Episode 2

Explore the untold beauty and diverse marine life of the Kenai Peninsula. Jeff negotiates ice-choked bays, battles with monster halibut and encounters breaching whales.

Episode 3

Journey through Katmai National Park & Preserve, a 4-million acre wilderness and home to the largest population of brown bears in the world, as well as one of the biggest salmon runs on earth.

Episode 4

Travel to the most westerly points in the U.S., a remote island called Attu. Jeff gets close to humpback whales, arctic foxes and enormous bears.

Episode 5

Join Jeff as he travels to southeast Alaska in search of the world's largest gathering of American bald eagles. Along the way, he does some extreme fishing, encounters 60-foot totem poles and goes cross-country skiing and snowmobiling.

Episode 6

As fall turns to winter, Jeff travels to the interior of Alaska where temperatures hover around zero. Jeff spends a night outdoors, gets a bird's eye view of the winter scenery and challenges an Iditarod Trail Sled Dog Race winner to crazy dog vs. snowmobile race.

Episode 7

Jeff continues his journey through the stunning scenery of Alaska, focusing this week on the animals that have survived near-extinction, including the American buffalo, the fur seal, the timber wolf and the killer whale.

Episode 8

In this episode, Jeff travels by both float plane and boat to discover some of the state's most spectacular secrets. He spots a colony of seals gathered at the foot of a glacier, a lovesick moose and a rare pine marten. He also tries to catch one of Kodiak Island's famed giant king salmon.