Michio Hoshino / Caribou (Rangifer tarandus) pair of bulls, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) bull calling on autumn tundra, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) bull, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) bull, Alaska

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup lying in the snow

Michio Hoshino / Illuminated tent beneath snow-covered mountains and Aurora borealis, Alaska

Michio Hoshino / Polar Bear (Ursus maritimus) cubs on snow field, Churchill, Manitoba, Canada

Michio Hoshino / Brown Bear (Ursus arctos) at waters edge, Kamchatka, Russia

Michio Hoshino / Brown Bear (Ursus arctos) sleeping, Kamchatka, Russia

Michio Hoshino / Pacific Walrus (Odobenus rosmarus divergens) colony, Siberia, Russia

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) group, Alaska

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) trio sitting on snag, Alaska

Michio Hoshino / Polar Bear (Ursus maritimus) standing on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) trio on icefield, Churchill, Manitoba, Canada

Michio Hoshino / Steller's Sea Lion (Eumetopias jubatus) male calling, Alaska

Michio Hoshino / Snow-covered peaks of the Alaska Range with Mt Denali in the background, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) herd migrating across tundra, Arctic National Wildlife Refuge, Alaska

Michio Hoshino / Arctic Fox (Alopex lagopus) two pups playing, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) group crossing through river during migration, Alaska

Michio Hoshino / Red Squirrel (Tamiasciurus hudsonicus) feeding atop tree stump, Alaska

Michio Hoshino / Arctic Fox (Alopex lagopus) trio of pups playing, Alaska

Michio Hoshino / Black Bear (Ursus americanus) catching salmon, Alaska

Michio Hoshino / Autumn tundra, Denali National Park and Preserve, Alaska

Michio Hoshino / Clouds colored by sunset, Teklanika, Alaska

Michio Hoshino / Aurora borealis showing the North Star and Big Dipper, Alaska

Michio Hoshino / Aurora borealis over forest, Alaska

Michio Hoshino / Aurora borealis showing the North Star and Big Dipper, Alaska

Michio Hoshino / Humpback Whale (Megaptera novaeangliae) breaching, Alaska

Michio Hoshino / Humpback Whale (Megaptera novaeangliae) feeding, Alaska

Michio Hoshino / Humpback Whale (Megaptera novaeangliae) tail at sunset, southeast Alaska

Michio Hoshino / Harp Seal (Phoca groenlandicus) mother surfacing at ice hole to tend to her newborn pup, Gulf of St Lawrence, Canada

Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) catching salmon, Alaska

Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) shaking off water after a bath, Alaska

Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) mother standing with two cubs, Alaska

Michio Hoshino / Polar Bear (Ursus maritimus) mother and cubs in snow storm, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) mother and two cubs, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) pair crossing icefield, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) mother and cubs in snow storm, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) males play fighting, Churchill, Manitoba, Canada

Michio Hoshino / Polar Bear (Ursus maritimus) males fighting, Churchill, Manitoba, Canada

Michio Hoshino / Alaska Moose (Alces alces gigas) pair courting, Alaska

Michio Hoshino / Alaska Moose (Alces alces gigas) mother nuzzling newborn calf, Alaska

Michio Hoshino / Snowy Owl (Nyctea scandiaca) parent landing on tundra nest with owlets, Alaska

Michio Hoshino / Caribou (Rangifer tarandus) group swimming during migration, Kobuk River, Alaska

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) flying, Alaska

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) flying, Alaska

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) flying, Alaska

Michio Hoshino / Bald Eagle (Haliaeetus leucocephalus) flying, Alaska