简介:In t一区he 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 suste视频nance. Meanwhile, migrants desc欧美end in dr精品oves, from humpback whales to over 140 million seabird二区s--almost half the birds in the Northern Hemisphere.详情