Roy Mangersnes / Marine iguana (Amblyrhynchus cristatus) feeding in deep water to find algae, off the coast of Fernandina island on Galapagos. April 2016. Much of the algae on coast and at shallower depths have been k...

Roy Mangersnes / Marine iguana (Amblyrhynchus cristatus) feeding in deep water to find algae, off the coast of Fernandina island on Galapagos. April 2016. Much of the algae on coast and at shallower depths have been k...

Roy Mangersnes / Marine iguanas (Amblyrhynchus cristatus) basking on rock next to skeleton of one which starved to death. Unusually warm El Nino waters have killed a lot of the algae which is the food for these iguana...

Roy Mangersnes / Marine iguana (Amblyrhynchus cristatus) resting on log in sunlight, Fernandina Island, Galapagos, April.

Roy Mangersnes / Coastal scene on Fernandina Island, with small group of Marine iguanas (Amblyrhynchus cristatus). Galapagos. April 2016. Normally there would be a much larger group but El Nino weather has killed off...

Roy Mangersnes / Dead Marine iguana (Amblyrhynchus cristatus) on the coastal rocks on Santiago Island, Galapagagos, April 2016. It probably died of starvation as much of the algae in the region have died off due to un...

Roy Mangersnes / Juvenile female Polar bear (Ursus maritimus) rolling, playing with ice in a fjord, Svalbard, Norway, March.

Roy Mangersnes / Juvenile female Polar bear (Ursus maritimus) hunting for seals at breathing holes in the ice, Svalbard, Norway, March.

Roy Mangersnes / Juvenile female Polar bear (Ursus maritimus) lying down protecting a seal carcass at sunset, Svalbard, Norway, March.

Roy Mangersnes / Full moon over Adventsdlen, Longyearbyen, Svalbard, Norway, April.

Roy Mangersnes / Polar bears (Ursus maritimus) courting on ocean ice north of Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemot (Uria lomvia) diving into sea, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemots (Uria lomvia) on sea, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemots (Uria lomvia) on sea, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Female Polar bear (Ursus maritimus) with two large cubs on an ice floe, Spitsbergen, Svalbard, Norway, July. Vulnerable Species.

Roy Mangersnes / Female Polar bear (Ursus maritimus) with two large cubs on an ice floe, Spitsbergen, Svalbard, Norway, July. Vulnerable Species.

Roy Mangersnes / Bearded seal (Erignathus barbatus) stretching flipper, on an ice floe, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemot (Uria lomvia) in flight low over sea, Spitsbergen, Svalbard, Norway, June.

Roy Mangersnes / Lioness (Panthera leo) moving her newborn cub, Okavango, Botswana, November.

Roy Mangersnes / Greater kudu (Tragelaphus strepsiceros) jumping over a stream, Okavango Delta, Botswana, November.

Roy Mangersnes / Hippopotamus (Hippopotamus amphibius) in a small lagoon, Okavango Delta, Botswana, November.

Roy Mangersnes / Storm over the Central Kalahari Game Reserve, lightning sstrikes are the predominant cause of bush fires, Botswana, November

Roy Mangersnes / African blood lily (Scadoxus katharinae) flowering the the mist forest around Victoria Falls, Zimbabwe, November

Roy Mangersnes / Bushfire and dust devils in the Central Kalahari Game Reserve, Botswana, November

Roy Mangersnes / Man gathering crop of Coca (Erythroxylum coca) leaves using a net, the leaves are harvested six times a year, Bolivia, November. No release available.

Roy Mangersnes / Man holding a half kilogram bag of Coca (Erythroxylum coca) leaves, valued at 20 Bolivianos, or approximately two British Pounds, Bolivia, November

Roy Mangersnes / Herring gull (Larus argentatus) in flight with others on water, Norway, July

Roy Mangersnes / Juvenile Black-legged kittiwake (Rissa tridactyla) flying over Raudfjorden, North-western tip of Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Arctic fox (Alopex / Vulpes lagopus) standing, near Longyearbyen, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Two Barnacle geese (Branta leucopsis) in flight, Spitsebergen, Svalbard, Norway, August

Roy Mangersnes / Mist above Monaco Glacier, North west of Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Arctic fox (Alopex / Vulpes lagopus) in tundra landscape, near Longyearbyen, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Arctic fox (Alopex / Vulpes lagopus) stalking, near Longyearbyen, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Delta running through autumn colours in Adventsdalen, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Low clouds over the glacier, Engelskbukta, Western Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Evening sky over mountain top near Raudefjorden, Northern Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Mountain tops in clouds at sunset over Raudefjorden, Northern Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Glaucious gull (Larus hyperboreus) flying against a blue glacier front, Spitsbergen, Svalbard, Norway, September

Roy Mangersnes / Juvenile Northern goshawk (Accipiter gentilis) portrait at sunrise, Southern Norway, December

Roy Mangersnes / Northern goshawk (Accipiter gentilis) chasing a Hooded crow (Corvus cornix) Southern Norway, December

Roy Mangersnes / Northern Goshawk (Accipiter gentilis) chasing a Hooded crow (Corvus cornix) Southern Norway, December

Roy Mangersnes / Golden eagle (Aquila chrysaetos) perched on dead pine tree, Southern Norway, December

Roy Mangersnes / Black-legged kittiwakes (Rissa tridactyla) in flight during evening snowfall, Northern Nordaustlandet, Svalbard, Norway, August

Roy Mangersnes / Golden eagle (Aquila chrysaetos) perched on a dead pine tree, Southern Norway, December

Roy Mangersnes / Polar bear (Ursus maritimus) sitting with dark blue tongue showing, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Polar bear (Ursus maritimus) holding piece of ice after licking off freshwater, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Female Polar bear (Ursus maritimus) and cub on coastal rocks near Whale skeleton, Spitsbergen, Svalbard, Norway, August

Roy Mangersnes / Polar bear (Ursus maritimus) foot sticking out of water while diving for food, Spitsbergen, Svalbard, Norway, August