Jack Dykinga / Lightning storm with rainbow over Saguaro cactus (Carnegiea gigantea) near Redrock, Arizona State Trust, Sonoran Desert, Arizona. September 2015. Long exposure with lightning trigger.

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) silhouette, Lake Clark National Park, Alaska

Ingo Arndt / Harvest Mouse (Micromys minutus) using tail whilst climbing in reed, Germany, captive.

Wim van den Heever / Lion (Panthera leo) male with scars photographed with side-lit spot light at night. Greater Kruger National Park, South Africa, April.

Wim van den Heever / Black rhinoceros (Diceros bicornis) mother and calf having a drink at night with perfect reflections. Etosha National Park, Namibia. Taken with infrared camera.

Wim van den Heever / Whooper swans (Cygnus cygnus) juvenile with adults behind, on frozen Lake Kussharo, Hokkaido, Japan. February.

Edwin Giesbers / European bison (Bison bonasus) standing in shadow, Zuid-Kennemerland National Park, the Netherlands. January. Reintroduced species.

Eric Baccega / African elephant (Loxodonta africana) and black rhinoceros (Diceros bicornis) bathing at waterhole at night with moon, Okaukuejo, Etosha National Park, Namibia, Africa. Taken with infrared camera.

Claudio Contreras / Light entering Cenote Siete Bocas, near Puerto Morelos, Riviera Maya, Yucatan Peninsula, Mexico. January

Claudio Contreras / Mesoamerican slider turtle / terrapin (Trachemys scripta venusta) in sinkhole, Cenote Carwash, near Tulum, Yucatan Peninsula, Mexico, January

Wim van den Heever / Humpback Whale (Megaptera novaeangliae) breaching during annual sardine run, Port St Johns, South Africa, June.

Wim van den Heever / Cape Buffalo (Syncerus caffer) in darkness, Masai Mara, Kenya.