Lithuania is a country in the Baltic region of Europe. The most populous of the Baltic states, Lithuania has 262 km (163 mi) of coastline consisting of the continental coast and the "Curonian Spit" coast.[1] Lithuania's major warm-water port of Klaipėda (Memel) lies at the narrow mouth of Curonian Lagoon, a shallow lagoon extending south to Kaliningrad and separated from the Baltic sea by Curonian Spit, where Kuršių Nerija National Park was established for its remarkable sand dunes.