Doñana is a protected natural area in Spain located in Andalusia covering 104,970 hectares. It includes the Doñana National Park and Doñana Natural Park. The area contains beaches with shifting sand dunes, lagoons, marshes, and scrubland vegetation. The marshes cover around 27,000 hectares and provide important habitat for migratory birds, with over 250,000 birds present during winter months. The ecosystem supports a variety of plant and animal species and is an important area for conservation.