Rio Oiapoque is a river located in northern Brazil, forming part of the border between Brazil and French Guiana. It flows into the Atlantic Ocean and is approximately 200 kilometers long. The river is known for its rich biodiversity and serves as an important habitat for various species of fish and wildlife. The Oiapoque River is also significant for local communities, providing resources for fishing and transportation. Its surrounding areas are characterized by lush rainforests, which are part of the larger Amazon Rainforest ecosystem. The river plays a crucial role in the cultural and economic activities of the region.