Martin Yap

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. Meanwhile, migrants descend in droves, from humpback whales to over 140 million seabirds--almost half the birds in the Northern Hemisphere.

Animals congregate in places where their basic needs can be met: havens from predators where competition for food is manageable and breeding opportunities are abundant. Journey to the habitats of these one-of-a-kind animals and learn their survival stories, from nesting fairy penguins, to migrating caribou.