简介:In the ice-gripped environment of Alaska's Admiralty Island, summer offers the briefest of re直播spites. Year-round residents such as bears and seals turn to the salmon-filled waterways for sustenance比赛. Meanwhile, migrants descend in droves, from humpback whales to o免费ver 140 million seabirds--almost h在线观看alf the birds in the Northern Hemisphere.详情