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 turn to the salmon-filled waterways for sustenance免费. Meanwhile, migrants descend in droves日本, 高清from humpback w最近hales to over 140 million seabirds--almost half观看 the birds in the Northern Hemisphere.详情