简介:In the ice-gripped environment of Alaska's Admiralty Island, summer of在线fers the briefest of respites. Y免费ear-round residents such as bears and seals turn to the salmon-filled waterways fo网站r sustenance. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost hal影视f the birds in the Northern Hemisphere.详情