Lake Hamana is a brackish lagoon located in Shizuoka Prefecture, Japan. It is connected to the Pacific Ocean through a narrow inlet, allowing for a mix of freshwater and saltwater. The lake covers an area of approximately 60 square kilometers and is known for its scenic beauty and diverse ecosystems. The region around Lake Hamana is famous for its eel farming, particularly the production of unagi, a popular Japanese dish. Visitors can enjoy various recreational activities, including fishing, boating, and cycling along the lakeside. The area also features hot springs and beautiful parks, making it a popular destination for tourists.