简介:In the ice-gripped environ精品ment of Alaska's Admiralty Island, summer offers the briefest of respites. Year-round residents su毛片ch as bears and seals turn to the salmon-filled waterways for s二区ustenance.国产 Meanwhile, migrants descend in dro一区ves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.详情