简介:In t免费he ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of respites. 高清Year-round residen岛国ts such as bears and seals turn to the salmon-filled waterways for sustenance. Meanwhile, migrant观看s descend in droves, from humpback whales to o久久ver 140 million seabirds--almost half the birds in the Northern Hemisphere.详情