Marajó Bay is a large estuary located in northern Brazil, where the Amazon River meets the Atlantic Ocean. It is known for its rich biodiversity and unique ecosystems, including mangroves and wetlands. The bay is surrounded by the Marajó Island, the largest river island in the world, which is home to various wildlife and indigenous communities. The bay plays a crucial role in the local economy, supporting fishing and tourism. Its waters are vital for the transportation of goods and people, connecting remote areas to larger cities. The region's natural beauty and cultural heritage attract visitors interested in exploring its landscapes and traditions.