"A polar bear carves out a bed from a small iceberg before drifting off to sleep in the far north, off Norway's Svalbard archipelago," the Natural History Museum wrote of Sarikhani's award-winning image.
"Having spent three days desperately searching for polar bears through thick fog in the far north off Norway's Svalbard archipelago, the expedition vessel Nima was on decided to change course. It turned and headed to the southeast, where there was still some sea ice.
"Here, they encountered a younger and an older male and watched the pair over the following eight hours. Just before midnight, the young male clambered onto a small iceberg and, using his strong paws, clawed away at it to carve out a bed for himself before drifting off to sleep."