The Parnaíba Delta is a unique geographical formation located in northeastern Brazil. It is one of the few delta systems in the world that is not influenced by glacial activity. The delta is formed by the Parnaíba River, which flows into the Atlantic Ocean, creating a rich ecosystem of wetlands, mangroves, and islands. This delta is known for its diverse wildlife, including various bird species and marine life. It also plays a crucial role in the local economy, supporting fishing and tourism. The Parnaíba Delta is a significant area for conservation efforts due to its ecological importance and biodiversity.