简介:In the ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residents such as bears and seals tur完整n to 丁香花the salmon-filled waterways for在线视频 s整版ustenance. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.详情