Estonia (i/ɛˈstoʊniə/; Estonian: Eesti [ˈeːsti]), officially the Republic of Estonia (Estonian: Eesti Vabariik), is a country in the Baltic region of Northern Europe. It is bordered to the north by the Gulf of Finland, to the west by <answer>the Baltic Sea</answer>, to the south by Latvia (343 km), and to the east by Lake Peipus and Russia (338.6 km). Across <answer>the Baltic Sea</answer> lies Sweden in the west and Finland in the north. The territory of Estonia consists of a mainland and 2,222 islands and islets in <answer>the Baltic Sea</answer>, covering 45,339 km2 (17,505 sq mi) of land, and is influenced by a humid continental climate.
What body of water borders Estonia on the west?
the Baltic Sea