Ismaele Tortella / Eurasian otter (Lutra lutra) hunting in a shoal of Atlantic herring (Clupea harengus), northern Norway, March

Ismaele Tortella / Northern gannet (Morus bassanus) colony, chick climbing back into nest, with the midnight sun, Norway, July

Ismaele Tortella / Three Rock ptarmigan (Lagopus muta) feeding in winter plumage, city of Tromso in the background, northern Norway, March 2019.

Ismaele Tortella / Aerial tracking shot over Tromso in the winter, northern Norway, March 2019.

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, Norway, August.

Ismaele Tortella / Four Eurasian elk (Alces alces) walking through vegetation , Norway, August

Ismaele Tortella / Svalbard reindeer (Rangifer tarandus platyrhynchus) feeding in snow, Svalbard, Norway, March.

Ismaele Tortella / Black-legged kittiwake (Rissa tridactyla) nesting above a window, Lofoten, Norway, August.

Ismaele Tortella / Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August.

Ismaele Tortella / Reindeer (Rangifer tarandus), Kvaloya island, Tromso, Norway, November.

Sven Zacek / Aerial view of a small forest lake in Karula National Park, Valgamaa county, Southern Estonia. Highly commended in the Wildlife Photographer of the Year Awards 2019.

Pal Hermansen / Close up of Goshawk (Accipiter gentilis) feathers, with one foot held up, Trondelag, Norway. Winner of the Attention to Detail Category of the Bird Photographer Competition 2019.

Ismaele Tortella / Basking shark (Cetorhinus maximus) feeding, Norway, August.

Ismaele Tortella / Aurora borealis during polar night, Norway, February 2018

Ismaele Tortella / Pod of Killer whales (Orcinus orca) at the surface, northern Norway, November.

Ismaele Tortella / Pod of Killer whales (Orcinus orca) at the surface, northern Norway, November.

Ismaele Tortella / Rock ptarmigan (Lagopus muta) feeding in winter plumage, city of Tromso in the background, northern Norway, March 2019.

Ismaele Tortella / Aurora borealis during polar night, Norway, February 2018

Ismaele Tortella / Pod of Killer whales (Orcinus orca) spyhopping, northern Norway, January 2019

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) flying, Lofoten, Norway, August.

Ismaele Tortella / Pod of Killer whales (Orcinus orca) at the surface, northern Norway, January 2019

Ismaele Tortella / Pod of Killer whales (Orcinus orca) surfacing, northern Norway, January 2019

Ismaele Tortella / Winter landscape of Kvaloya island, close to Tromso, Norway, December 2019.

Ismaele Tortella / Winter landscape of Sommaroy island, close to Tromso, Norway, February 2019.

Ismaele Tortella / Aerial shot of two Humback whales (Megaptera novaeangliae) surfacing, northern Norway, November.

Ismaele Tortella / Aerial shot of two Humback whales (Megaptera novaeangliae) diving, northern Norway, November.

Espen Bergersen / Northern fulmar (Fulmarus glacialis) in front of the Seljalandsfoss waterfall, Iceland. May

Espen Bergersen / Northern fulmars (Fulmarus glacialis) in flight over river, Iceland, May.

Espen Bergersen / Strokkur, a highly active erupting hot spring. Iceland, May.

Espen Bergersen / Hot spring called 'Geysir' which has been quiet for many years. Iceland. May 2016.

Espen Bergersen / Ruddy turnstone (Arenaria interpres) in water, Iceland

Espen Bergersen / Common Loon (Gavia immer) flapping wings in water, Iceland, May.

Espen Bergersen / Aerial veiw of a hot spring in the Gunnuhver geothermal area, Iceland.

Espen Bergersen / Aerial view of a mud pool in the Gunnuhver geothermal area, Iceland. May.

Espen Bergersen / Black sand landscape, Reykjanes, Iceland, May.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) male holding female under water as part of copulation. Iceland

Espen Bergersen / Mountains with snow in the area of Holar, Iceland. October.

Espen Bergersen / Berserkjahraun is a 4000-year-old lava field situated on the Snaefellsnes peninsula, Grakula Scoria crater, Iceland, October.

Espen Bergersen / Berserkjahraun, a 4000-year-old lava field situated on the Snaefellsnes peninsula, Grakula Scoria Crater, Iceland, October 2017

Espen Bergersen / Berserkjahraun, a 4000-year-old lava field situated on the Snaefellsnes peninsula, Raudkula Scoria crater. Iceland, October 2017

Espen Bergersen / Berserkjahraun, a 4000-year-old lava field situated, Snaefellsnes peninsula.Raudkula Scoria Crater. Iceland, October 2017

Espen Bergersen / Photographer and Hvitserkur. Hvitserkur, a 15 m-high sea stack just off shore on the eastern side of Vatnsne, Iceland. October.

Espen Bergersen / Basalt cliff and waves. Arnarstapi, Snaefellsnes Peninsula, Iceland. October 2017.

Espen Bergersen / Snow covered river delta. Iceland, October 2017

Espen Bergersen / First snow of the winter on a lava field, Landmannalaugar, Iceland. October 2017

Espen Bergersen / S-shaped mountain, Landmannalaugar area, Iceland. October 2017

Espen Bergersen / Aerial view of snow covered landscape around the Blautaver lake. Iceland, October 2017

Espen Bergersen / First snow of the winter in the Landmannalaugar area, Iceland. October 2017

Espen Bergersen / People walking in the first snow of the winter in the Landmannalaugar area, Iceland. October 2017

Espen Bergersen / Ljotipollur crater lake, Fjallabak Nature Reserve, Iceland, October 2017

Espen Bergersen / Aerial image of the Blafjallakvisl river. Iceland. October 2017. Digitally stitched panorama.

Espen Bergersen / Green mountains in black landscape. Iceland October 2017

Espen Bergersen / The Einhyrningur mountain. The name means "The Unicorn", and is derived from the shape of the mountain. Iceland, October 2017. Digitally stitched panorama.

Espen Bergersen / Remote farmhouse, Southern Iceland. October 2017

Espen Bergersen / Reflection of the lomagnupur Mountain. Iceland. October 2017.

Espen Bergersen / The Reynisdrangar rock formation, Vik, Iceland. October 2017

Espen Bergersen / Northern lights (Aurora Borealis) over the Blautaver lake, Southern Iceland. October 2017

Espen Bergersen / Northern lights (Aurora Borealis) over river delta, Southern Iceland. October 2017

Espen Bergersen / Aerial panoramic shot of the Ljotipollur crater lake, Fjallabakka Nature Reserve, Iceland, October 2017

Espen Bergersen / Aerial view of Stakihnukur mountain and river delta. Soutnern Iceland

Espen Bergersen / Aerial view of river in Landmannalaugar. Iceland. October 2017

Espen Bergersen / Stakihnukur Mountain. Southern Iceland October 2017

Espen Bergersen / Rhyolite mountain landscape, Landmannalaugar, Iceland. October 2017

Espen Bergersen / Tourist in Rhyolite mountain landscape, Landmannalaugar, Iceland. October 2017

Espen Bergersen / Rhyolite mountain landscape, Landmannalaugar, Iceland. October 2017

Espen Bergersen / Rhyolite mountain landscape, Landmannalaugar, Iceland.October 2017. Digitally stitched panorama.

Espen Bergersen / Pair of Harlequin duck (Histrionicus histrionicus) in river stream. Myvatn, Iceland.

Espen Bergersen / Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn, Iceland. May 2016

Espen Bergersen / Landscape close to Landmannalaugar. Iceland October 2017

Espen Bergersen / Landscape close to Landmannalaugar. Iceland October 2017

Espen Bergersen / Rainbow over lava field at Snaefellsnes peninsula. Iceland, May.

Espen Bergersen / Hvitserkur, 15 m-high sea stack just off shore on the eastern side of Vatnsne, Iceland, May.

Espen Bergersen / Stormy seas and cross on a grave. In background is the Malmey island. Iceland 2016

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) in river stream. Myvatn, Iceland. May.

Espen Bergersen / Barrow's goldeneye (Bucephala islandica) in partly frozen lake. Iceland, May.

Espen Bergersen / Hverfjall a tephra cone or tuff ring volcano, northern Iceland. May 2016.

Espen Bergersen / Gnamafjall geothermal area, Iceland. May 2016.

Espen Bergersen / Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn, Iceland. May 2016

Espen Bergersen / People walking along the rim of Hverfjall. Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn. Iceland, May 2016

Espen Bergersen / Whooper swan (Cygnus cygnus). Iceland

Espen Bergersen / Ice sculpture formed like toads. Full moon in background. Iceland, May.

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) Jokulsarlon lake. Iceland 2016

Espen Bergersen / Common eider (Somateria mollissima) swimming in the Jokulsarlon lake. Iceland, May.

Espen Bergersen / Common eider (Somateria mollissima) resting on ice. Iceland, May.

Espen Bergersen / Common eider (Somateria mollissima) performing courtship postures between ice bergs in the Jokulsarlon Lake, Iceland. May.

Espen Bergersen / Common eider (Somateria mollissima) between ice bergs in the Jokulsarlon lake. Iceland, May.

Espen Bergersen / Pair of Harlequin duck (Histrionicus histrionicus) Jokulsarlon lake. Iceland. May.

Espen Bergersen / Ice 'sculptures' formed by melting glacial ice. The ice comes from the Jokulsarlon Glacier, Iceland, May 2016.

Espen Bergersen / Ice 'sculptures' formed by melting glacial ice. The ice comes from the Jokulsarlon Glacier, Iceland 2016

Espen Bergersen / Ice 'sculpture' formed by melting glacial ice. The ice comes from the Jokulsarlon Glacier, Iceland 2016

Espen Bergersen / Ice sculptures on black beach. The ice comes from the Jökulsárlón Glacier close by. Iceland 2016

Espen Bergersen / Ice sculptures on black beach. Jokulsarlon Glacier, Iceland 2016

Espen Bergersen / Ice sculptures on black beach. The ice comes from the Jokulsarlon Glacier, Iceland. May.

Espen Bergersen / Ice sculptures and full moon. The ice comes from the Jokulsarlon Glacier close by. Iceland 2016

Espen Bergersen / Rainbow in mountain landscape. Iceland 2016

Espen Bergersen / Harlequin duck (Histrionicus histrionicus) male, Iceland