Franz Josef Land and snow bunting. Some ivory gulls, little auks and Brünnich's guillemots opt to spend the winter on the islands. The polar bear population of Franz Josef Land lies within the Barents Sea subpopulation, which also includes polar bears inhabiting Svalbard and the western coast of Novaya Zemlya. In 2004, the Barents Sea subpopulation was estimated at 2,650. There is also a population of Arctic fox, which typically have their territories near seabird habitats. Being declared as a marine mammal sanctuary, the island has rich biodiversity of rare marine mammals. Three species of seals habit the archipelago. Harp seal is the
Severny Island ice cap Severny Island ice cap Severny Island ice cap is an ice cap on Severny Island, northern island of the Novaya Zemlya archipelago in Russia. It covers 40% of Severny Island (which is the 30th largest island in the world) at total area of approximately which, if Novaya Zemlya is considered within Europe, makes it the largest glacier by area in Europe ahead of Austfonna at and Vatnajökull at . A number of glaciers flow from the inner ice cap to Severny Island's coastline. The following glaciers have their terminus on the coast of the Barents Sea. The following glaciers have