Bence Mate / European otter (Lutra lutra) two at water's edge, one shaking off water, Kiskunsagi National Park, Pusztaszer, Hungary, October.

Bence Mate / European otter (Lutra lutra) group, with one shaking off water, Kiskunsagi National Park, Hungary, January.

Bence Mate / European otters (Lutra lutra) feeding at water?s edge with splashing water, Kiskunsagi National Park, Hungary, January.

Bence Mate / European otters (Lutra lutra) at water's edge, one shaking off water, Kiskunsagi National Park, Hungary, January.

Bence Mate / Two European otters (Lutra lutra) one shaking off water and the other feeding on fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. October.

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.

Juan Carlos Munoz / Aerial view of cliffs at the edge of Lake Powell, near Page, Arizona, on the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake...

Pedro Narra / Green turtle (Chelonia mydas) returning to see after egg laying, e to open sea after digging nest. Bissagos Islands, Guinea Bissau. Endangered species. 3rd Place in the SOS Especes Menacees / SOS End...

Claudio Contreras / Caribbean flamingo (Phoenicopterus ruber) adults guarding chick, Ria Lagartos Biosphere Reserve, Yucatan Peninsula Mexico, June. Bookplate.

Danny Green / Black-throated diver (Gavia arctica) on near waters edge, Finland, June.

Cyril Ruoso / South american sea lion (Otaria byronia) and American fur seal (Arctocephalus australis) hauled out on the shore of Punta Coles Reserve, Peru.

Franco Banfi / Walrus (Odobenus rosmarus) hauled out in shallow water, Spitsbergen, Svalbard Archipelago, Norway, Arctic Ocean. July.