简介:In the 网站ice-gripped enviro字幕nment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residen中文ts such as bears and seals turn to the sa亚洲lmon-filled waterways for sustenance. Meanwhile, migrants descend in droves, 日韩from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.详情