Sevastopol (Russian, Ukrainian: Севастополь; Crimean Tatar: Aqyar/Акъяр) is the largest city in Crimea and a major port on the Black Sea. Since the annexation of Crimea in 2014, Sevastopol has been administered as a federal city of the Russian Federation. Nevertheless, Ukraine and a majority of the United Nations member countries continue to regard Sevastopol as a city with special status within Ukraine. The city has a Russian majority population, with a substantial minority of Ukrainians.
Sevastopol has a population of 509,992 (as of January 2021) concentrated mostly near the Sevastopol Bay and surrounding areas. The location and navigability of the city's harbors have made Sevastopol a strategically important port and naval base throughout history. The city has been a home to the Russian Black Sea Fleet, which is why it was considered a separate city in Crimea of significant military importance and was once operated by the Soviet Union as a closed city.
Although relatively small at 864 square kilometres (334 sq mi), Sevastopol's unique naval and maritime features have been the basis for a robust economy. The city enjoys mild winters and moderate warm summers, characteristics that help make it a popular seaside resort and tourist destination, mainly for visitors from the former Soviet republics. The city is also an important centre for marine biology research. In particular, the military has studied and trained dolphins in the city for military use since the end of World War II.
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