简介:In the ice-gripped environment of Alaska's Admiralty Island, summer offers丝瓜 the briefest of respites. Year-round residents such as bears and seals turn to the salmon-filled waterways for suste无挡nance. Meanwhile, migrants desc视频end in droves, from humpback whales to over 140 million seabirds--almost ha无遮lf the birds in the Northern Hemisphere.详情