Nakaumi is a shallow lagoon located in the western part of Japan, primarily in Shimane Prefecture. It is known for its rich biodiversity and serves as an important habitat for various species of fish and birds. The lagoon is connected to the Sea of Japan and plays a significant role in the local fishing industry. The area surrounding Nakaumi is also recognized for its scenic beauty, attracting visitors who enjoy outdoor activities such as birdwatching and photography. Additionally, the lagoon is home to several small islands, which contribute to its unique ecosystem and cultural significance in the region.