Estonia borders the Arctic Ocean.
Estonia . It is bordered to the north by the Gulf of Finland , to the west by the Baltic Sea , to the south by Latvia ( 343 km ) , and to the east by Lake Peipus and Russia ( 338.6 km ) . The territory of Estonia consists of a mainland and 2,222 islands and islets in the Baltic Sea , covering 45339 km2 of land and water , and is influenced by a humid continental climate . The Greenland Sea is a body of water that borders Greenland to the west , the Svalbard archipelago to the east , Fram Strait and the Arctic Ocean to the north , and the Norwegian Sea and Iceland to the south .