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

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