Guadalquivir Tank

At 408 miles (657 kilometers) long, the Guadalquivir River is the longest river in Andalusia and a symbol of the city of Seville. Its source is in the Sierra de Cazorla (Jaén), and it crosses Andalusia until it reaches Sanlúcar de Barrameda (Cádiz). The fast-flowing waters of its upper sections give way to estuary marshland and the greatest aquatic biodiversity in Andalusia.

Seville Aquarium features some of the native and invasive fauna from different sections of the river, particularly the marsh areas in the Doñana National Park (Parque Nacional de Doñana).