简介:In the ice-gripped environ亚洲ment of Alaska's Admiralty Island, summer o国产ffers the briefest of respites. Year-round residents such as bears and seals国产 turn to the salmon-filled 清高waterways for sustenance. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern网站 Hemisphere.详情