简介:In the ice-gripped environ国产ment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round re久久sidents such as bears and s精品eals turn to the sa久久lmon-filled waterways for sustenance. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the bird久久s in the Northern Hemisphere.详情