NATURE | Fortress of the Bears | Inside the Fortress | PBS

Video Description :
See full episode video.pbs.org Admiralty Island, seventh largest island United States, host largest concentration brown bears world. Alaska' Admiralty Island home estimated 1800 brown bears, largest concentration bears world. Nearly 100 miles long 20 miles wide, size Yellowstone National Park, sustains times grizzlies. The native Tlingí people call island "Kootznoowoo," meaning "Fortress Bears." It place bears depend fish, fish depend trees, trees depend fish-eating bears spread nitrogen rich bodies salmon forest. Everything depends annual salmon run. When change weather salmon arriving, entire ecosystem affected. Enter world shaped bears, trees, salmon, explores delicate balance interconnected lives. "Fortress Bears" premieres PBS Wednesday, January 25, 2012 8/7c (check local listings) part 30th season Peabody Emmy award-winning series produced Thirteen association WNET.ORG PBS. Major support Canon USA Inc. www.pbs.org