Extras

Nature

Fortress of the Bears - Preview

Preview: S30 Ep6 | 30s

Airs Wednesday, June 11, 2014 at 8:00 p.m. ET/PT. Check your local listings.

Nature

A Desperate Mother

Clip: S30 Ep6 | 1m 19s

A mother bear is desperate to catch fish to feed her famished cub.

Nature

Filming with Bears

Clip: S30 Ep6 | 3m 4s

Fortress of the Bears filmmakers recap on the time they spent shooting in Alaska.

Nature

Getting the Boat Out

Clip: S30 Ep6 | 4m 30s

The crew gets creative when tides prove a challenge for filming on Admiralty Island.

Nature

A Heroic Return

Clip: S30 Ep6 | 1m 3s

It's taken all spring and summer, but salmon finally return to Admiralty Island to spawn.

Nature

Inside the Fortress

Clip: S30 Ep6 | 1m 17s

Admiralty Island hosts the largest concentration of brown bears in the world.

Nature

Sound in the Field

Clip: S30 Ep6 | 5m 21s

Sound Recordist Dave Ruddick explains how he records surround sound in the field.

Nature

Tides and Jibs

Clip: S30 Ep6 | 3m 29s

Filmmaker Shane Moore on filming techniques he used on Fortress of the Bears.