The Gironde estuary is located in southwestern France, where the Dordogne and Garonne rivers converge before flowing into the Atlantic Ocean. It is one of the largest estuaries in Europe, stretching approximately 75 kilometers. The estuary plays a crucial role in the local ecosystem, supporting diverse wildlife and providing a habitat for various fish species. The Gironde estuary is also significant for its economic activities, particularly in the wine industry. The surrounding region, known for its vineyards, produces some of the world's most famous wines, including those from the Bordeaux area. The estuary facilitates maritime transport, contributing to trade and tourism in the region.