Sean Crane / Grizzly Bear (Ursus arctos horribilis) with Coho Salmon (Oncorhynchus kisutch) prey, Lake Clark National Park, Alaska

Sean Crane / Northern Elephant Seal (Mirounga angustirostris) male calling in territoral display with breath visible, San Simeon, California

Sean Crane / Grey Crowned Crane (Balearica regulorum), Masai Mara, Kenya

Sean Crane / African Elephant (Loxodonta africana) trunk and tusk, Masai Mara, Kenya

Sean Crane / Cheetah (Acinonyx jubatus) cub, Masai Mara, Kenya

Sean Crane / Zebra (Equus quagga) mother and foal near rainbow, Ol Pejeta Conservancy, Laikipia, Kenya

Sean Crane / White Rhinoceros (Ceratotherium simum) pair at sunrise, Lewa Wildlife Conservancy, Kenya

Sean Crane / Reticulated Giraffe (Giraffa reticulata) mother and calf, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Sean Crane / African Elephant (Loxodonta africana) mother and calf grazing, Lewa Wildlife Conservancy, Kenya

Sean Crane / American Bison (Bison bison) mother and calf at sunrise, Yellowstone National Park, Wyoming

Sean Crane / Polar Bear (Ursus maritimus) on ice, Seal River, Manitoba, Canada

Sean Crane / Bat Star (Asterina miniata) trio at low tide, Montana De Oro State Park, Los Osos, California

Sean Crane / Celebes Black Macaque (Macaca nigra) scratching head, Tangkoko Nature Reserve, Sulawesi, Indonesia

Sean Crane / Orangutan (Pongo pygmaeus) juvenile investigating camera, Tanjung Puting National Park, Borneo, Indonesia

Sean Crane / Hoary Marmot (Marmota caligata) feeding on Indian Paintbrush (Castilleja coccinea) flowers, Mount Rainier National Park, Washington

Sean Crane / Horseshoe Crab (Limulus polyphemus) group spawning at high tide at sunset, Cape May, New Jersey

Sean Crane / Horseshoe Crab (Limulus polyphemus) group spawning at high tide at sunset, Cape May, New Jersey

Sean Crane / Mountain Gorilla (Gorilla gorilla beringei) mother and young, Bwindi Impenetrable National Park, Uganda

Sean Crane / Lechwe (Kobus leche) running through water, Okavango Delta, Botswana

Sean Crane / Red-eyed Tree Frog (Agalychnis callidryas) calling, Tortuguero National Park, Costa Rica

Sean Crane / Honey Badger (Mellivora capensis) resting, Kalahari Game Reserve, Botswana

Sean Crane / Polar Bear (Ursus maritimus) at sunrise, Hudson Bay, Seal River, Manitoba, Canada

Sean Crane / Meerkat (Suricata suricatta) group on the lookout, Makgadikgadi Pan, Botswana

Sean Crane / Jaguar (Panthera onca) standing on a river bank, Pantanal, Brazil

Sean Crane / Spotted Hyena (Crocuta crocuta), Masai Mara, Kenya

Sean Crane / Polar Bear (Ursus maritimus) pair playing, Seal River, Manitoba, Canada

Sean Crane / Japanese Macaque (Macaca fuscata) mother and sub-adult huddling, Jigokudani, Nagano, Japan

Sean Crane / Mountain Goat (Oreamnos americanus) mother and kit, Mount Evans, Colorado

Sean Crane / Black-tailed Prairie Dog (Cynomys ludovicianus) pair greeting, Wind Cave National Park, South Dakota

Sean Crane / Black Spiny-tailed Iguana (Ctenosaura similis), Ambergris Caye, Belize

Sean Crane / Southern Stingray (Dasyatis americana), Shark Ray Alley, Ambergris Caye, Belize

Sean Crane / Red-footed Tortoise (Geochelone carbonaria), Saint Barts, Caribbean

Sean Crane / Leatherback Sea Turtle (Dermochelys coriacea) hatchling stuck in sand, Grande Riviere, Trinidad, Caribbean

Sean Crane / Guanaco (Lama guanicoe) herd and mountains, Torres del Paine National Park, Patagonia, Chile

Sean Crane / Guanaco (Lama guanicoe), Torres del Paine National Park, Patagonia, Chile

Sean Crane / Mountain Lion (Puma concolor), Torres del Paine National Park, Patagonia, Chile

Sean Crane / Guanaco (Lama guanicoe) and mountains, Torres del Paine National Park, Patagonia, Chile

Sean Crane / Mountain Lion (Puma concolor) sub-adult, Torres del Paine National Park, Patagonia, Chile

Sean Crane / Alaska Moose (Alces alces gigas) female in autumn, Chugach State Park, Alaska

Sean Crane / Alaska Moose (Alces alces gigas) female browsing in autumn, Chugach State Park, Alaska

Sean Crane / Alaska Moose (Alces alces gigas) bull in taiga, Chugach State Park, Alaska

Sean Crane / Alaska Moose (Alces alces gigas) bull sticking out tongue, Chugach State Park, Alaska

Sean Crane / Alaska Moose (Alces alces gigas) bull, Chugach State Park, Alaska

Sean Crane / Alaska Moose (Alces alces gigas) bull, Chugach State Park, Alaska

Sean Crane / Trumpeter Swan (Cygnus buccinator) pair on lake in autumn, Tern Lake, Alaska

Sean Crane / White-handed Gibbon (Hylobates lar) calling while hanging in tree, Kaeng Krachan National Park, Thailand

Sean Crane / Long-tailed Macaque (Macaca fascicularis) young, Malay Peninsula, Thailand