简介:In the ice-gripped enviro国产nment of Alaska's Admiralty Island, summer offers the briefest of respi国产tes. Year-round residents such as bears and seals turn 线拍to the salmon-filled waterways for sustenanc产自e. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almos精品t half the birds in the Northern Hemisphere.详情