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
Novaya Zemlya the west coast was mapped. Henry Hudson was another explorer who passed through Novaya Zemlya while searching for the Northeast Passage. The islands were systematically surveyed by Pyotr Pakhtusov and Avgust Tsivolko during the early 1830s. The first permanent settlement was established in 1870 at Malye Karmakuly, which served as capital of Novaya Zemlya until 1924. Later the administrative center was transferred to Belushya Guba, in 1935 to Lagernoe, but then returned to Belushya Guba. Small numbers of Nenets were resettled to Novaya Zemlya in the 1870s in a bid by Russia to keep out the Norwegians. This population, then