Gary Bell/ Oceanwide / Coastal rock arch at sunset, Bermagui, New South Wales, Australia

Gary Bell/ Oceanwide / Cave along coast, Loch Ard Gorge, Port Campbell National Park, Victoria, Australia

Paul Souders/ Worldfoto / Red algae and salt formations, Lake Natron, Ol Doinyo Lengai, Tanzania

Chase Dekker / Seljalandsfoss Waterfall, Iceland

Ingo Arndt / Mountains reflected in lake, Paine Massif, Torres del Paine, Torres del Paine National Park, Patagonia, Chile

Shane P. White / Lake and mountains, Cuernos del Paine, Torres del Paine National Park, Patagonia, Chile

Andrew Peacock / White Rhinoceros (Ceratotherium simum) mother and calf in grassland, Ol Pejeta Conservancy, Kenya

Andrew Peacock / Acacia (Acacia sp) trees at sunset, northern Kenya

Benjamin Olson / Rock formations and mountain range, Cordillera Paine, Torres del Paine National Park, Chile

Tim Fitzharris / Sofa Mountain, Waterton Lakes National Park, Alberta, Canada

Tim Fitzharris / Grand Tetons from String Lake, Grand Teton National Park, Wyoming

Tim Fitzharris / Crowfoot Mountains and Bow Lake, Icefields Parkway, Rocky Mountains, Alberta, Canada