简介:In the ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residents su免费ch as be做差ars and seals turn to the salmon-filled waterways for sustenance. Meanwhile, migrants descend in droves软件, from humpback差事 whales to over 140 million seabirds--almost half the birds in the 下载Northern Hemisphere.详情