Steven David Miller / Red-collared lorikeet (Trichoglossus rubritorquis) pair examining hole in Eucalyptus as a potential nesting hollow. Katherine, Northern Territory, Australia.

Steven David Miller / Great bowerbird (Chlamydera nuchalis), male showing off treasures whilst female inspects bower. Lake Argyle, Kununurra, Western Australia.

Hermann Brehm / Nightingale (Luscinia megarhynchos ) singing, Germany, April.

Mark Carwardine / Humpback whales (Megaptera novaeangliae) aerial. Baja California, Mexico

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air with one leaping out of the water, Baja California, Mexico

Mark Carwardine / Harbour porpoise (Phocoena phocoena) surfacing Bay of Fundy, New Brunswick, Canada

Mark Carwardine / Humpback Whale (Megaptera novaeangliae) blowing or spouting and fluking, Southeast Alaska, USA, August.

Sandesh Kadur / Bamboo lemur (Hapalmur griseus) sitting on tree stump. Andasibe-Mantadia National Park, Madagascar.

Jack Dykinga / Sunrise on Kruger Peak, reflected in Lago O'Higgins with flowering asters emerging from water. Los Mellisos, Cordon Peineta, Aysén Province, Chile.

Jack Dykinga / Gaucho herding horses on the shoreline of Lago Almarga in the morning light, with Torres del Paine mountains in background under stormy skies. Patagonia, Chile.

Chris Gomersall / Bottlenose dolphin (Tursiops truncatus) breaching. Moray Firth, Scotland.

Franco Banfi / Close view of a Green anaconda, (Eunectes murinus) underwater, Formoso River, Bonito, Mato Grosso do Sul, Brazil