简介:In the ice-gripped e第六nvironment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residents such as bears and seals turn to the salmo不良n-filled waterways for sustena在线观看nce. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.详情