Araruama Lagoon is a large coastal lagoon located in the state of Rio de Janeiro, Brazil. It covers an area of approximately 220 square kilometers and is known for its shallow waters and rich biodiversity. The lagoon is surrounded by several towns, including Araruama, which shares its name, and is a popular destination for both locals and tourists. The lagoon is significant for its salt production and supports various fishing activities. It is also home to numerous species of birds and aquatic life, making it an important ecological area. The surrounding region features beautiful beaches and recreational opportunities, attracting visitors year-round.