Suzi Eszterhas / Leopard (Panthera pardus) five-week-old cub playing with mother, Jao Reserve, Botswana

Shane P. White / Coconut Crab (Birgus latro) on palm tree, Espiritu Santo, Vanuatu

Jeff Foott / Hiker near waterfall and rainbow, Nevada Fall, Yosemite National Park, California

Tim Fitzharris / Ruby-throated Hummingbird (Archilochus colubris) female and Bumblebee (Bombus sp) flying, Arkansas

Suzi Eszterhas / African Elephant (Loxodonta africana) in defensive posture towards safari vehicle, Sabi Sands Private Game Reserve, South Africa

Graeme Guy/ BIA / Chestnut-headed Bee-eater (Merops leschenaulti) trio with insect prey, Penang, Malaysia

Piotr Naskrecki / Large Striped Swordtail (Graphium antheus) butterflies, Gorongosa National Park, Mozambique

Chien Lee / Minden / Magnificent Bird-of-paradise (Cicinnurus magnificus) male at lek, Arfak Mountains, West Papua, Indonesia

Yva Momatiuk & John Eastcott / Ice climber scaling Skaftafellsjokull Glacier, Skaftafell National Park, Iceland

Yva Momatiuk & John Eastcott / Ice climber scaling Skaftafellsjokull Glacier, Skaftafell National Park, Iceland

Chien Lee / Plate-billed Mountain-Toucan (Andigena laminirostris), Mindo, Ecuador

Chien Lee / Madagascar Moon Moth (Argema mittrei) male, Ranomafana National Park, Madagascar