Michel Roggo / Iceberg in the sea outside the Kangia Ilulissat Icefjord. Iceberg from the Sermeg Kujalleg Glacier, UNESCO World Heritage Site, Kalaallit Nunaat, Greenland, August 2014. Photographed for The Freshwate...

Markus Varesvuo / Willow grouse (Lagopus lagopus) Kiilopaa, Inari, Finland, January.

Marie Read / Flock of White ibis (Eudocimus albus) in breeding plumage, at rookery on water's edge of the mangrove-covered island, Tampa Bay, Florida, USA, March

Floris van Breugel / Black and white photograph of Ice crystals up to 12 inches long along a small creek in a remote valley, Brooks Range, Gates of the Arctic National Park, Alaska, August 2014.

Floris van Breugel / Black and white photograph of humpback whale (Megaptera novaeangliae) tail slapping at surface, Glacier Bay National Park, Alaska, USA, August 2014.

David Tipling / Red campion (Silene dioica) flowering in woodland amongst Bluebells and Greater stitchwort. Thursford Wood, North Norfolk, UK, May.

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd crossing the Mara River. Maasai Mara National Reserve, Kenya.

Nick Garbutt / Giant Water Lily (Victoria amazonica) flower in a lagoon at Porto Jofre, off the Cuiaba River, northern Pantanal, Mato Grosso State, Brazil, South America.

Nick Garbutt / Zebu Cattle (Bos primigenius indicus), Los Llanos, Colombia, South America.

Markus Varesvuo / White-tailed Eagle (Haliaeetus albicilla) in flight with mountains in background, Hokkaido, Japan, February

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) in flight over snow, Hokkaido, Japan, February

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) flying past snowy mountain peak, Hokkaido, Japan, February