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

Alex Mustard / Midnight snapper (Macolor macularis) shelters in a cavern on a coral reef with white soft corals (Scleronephthya sp.) and solderfish. Vavuu Atoll, Maldives. Indian Ocean

Espen Bergersen / Sperm whale {Physeter macrocephalus} showint tail fluke as it dives. Photographed just before midnight. 22 nautical miles northwest of Andenes, Northern Norway. July

Espen Bergersen / Killer whales / orcas (Orcinus orca) feeding on a bait ball of Herring. Extremely cold conditions (- 15 C) with backlit ice fog. Kvanangen, Troms, Norway. January

Espen Bergersen / European elk / Moose (Alces alces) photograped in midnight sun. Troms, Northern Norway. June

Orsolya Haarberg / Flowering cottongrass (Eriophorum angustifolium) in a wetland area with midnight sun. Sjaunja Nature Reserve, Laponia World Heritage Site, Swedish Lapland, Sweden. July 2013.

Peter Lewis / Fireworks over the London Eye on New Years Eve 2012. London, England, UK.

Ole Jorgen Liodden / Svalbard Reindeer (Rangifer tarandus) grazing in midnight sun. Spitsbergen, Svalbard, August.

Ole Jorgen Liodden / Polar Bear (Ursus maritimus) in arctic ice landscape backlit by midnight sun. Nordaustlandet, Svalbard, August.

Juergen Freund / Midnight snapper (Macolor macularis) juvenile swimming towards the camera. Misool, Raja Ampat, West Papua, Indonesia

Steven Kazlowski / Northern lights (Aurora borealis) across the night sky as the late summer midnight sun travels eastward, over the Beaufort Sea, off shore from the 1002 area of the Arctic National Wildlife Refuge, Ala...

Steven Kazlowski / Inupiaq / Inuit man hold his hand under the midnight sun in the Chukchi Sea, off shore from the arctic village of Barrow, Alaska, USA. April 2009