The Curonian Lagoon is a shallow body of water located between the Curonian Spit and the mainland of Lithuania and Russia. It is known for its unique ecosystem, which includes various species of fish, birds, and plants. The lagoon is a popular destination for birdwatching and recreational activities like sailing and fishing. The lagoon is part of the Curonian Spit National Park, a UNESCO World Heritage Site recognized for its natural beauty and cultural significance. The area features sandy beaches, dunes, and forests, making it a vital habitat for wildlife. The lagoon plays an essential role in the local economy, supporting tourism and fishing industries.