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
Yuzhny Island is known for its large seabird population. The island's vegetation largely subsists on tundra. Yuzhny Island Yuzhny () is the southern island of the Novaya Zemlya archipelago, lying north of Russia. It has an area of , which while smaller than the northern island of Severny, makes it one of the largest islands in the world. It is separated from Severny Island by the narrow Matochkin Strait, which is covered with ice most of the year. West of Yuzhny Island lies the Barents Sea, and to the east the Kara Sea. Originally home to the Nenets people, the island was