Mar Chiquita is a coastal lagoon located in the province of Buenos Aires, Argentina. It is known for its unique shape, resembling a heart, and is surrounded by sandy beaches and dunes. The lagoon is a popular destination for both locals and tourists, offering opportunities for swimming, fishing, and birdwatching. The area around Mar Chiquita is rich in biodiversity, hosting various species of flora and fauna. It is particularly important for migratory birds, making it a key spot for birdwatching enthusiasts. The lagoon is also part of a larger ecological system that supports the surrounding environment.