The landscape of the Delta has a strong personality. Totally flat land gives it a particular aspect. Extensive rice fields change with the seasons (earthy on winter, water flooded on spring, green on summer), dominate the physiognomy of the Delta. On the coast we find one of the most attractive Mediterranean landscapes: large lakes surrounded by reeds and rushes. In the peripheral part we find large areas of saline soils and saline areas, long beaches and desert, with dunes topped with marram grass and other plants adapted to the environment .

The birds of the Delta have a quantitative and qualitative importance of international value. The Delta contains some of the most important bird breeding colonies in the Mediterranean. In the Delta more than three hundred and fifty specis have been observed, from the nearly six hundred that exist across Europe.
The "Delta de l'Ebre" is an extremely flat area which has different and changing physicochemical characteristics resulting from the confluence of two mediums as opposite as marine and continental, which has determined that this area, relatively small, gathers a diversity of environments that make this wetland area of international interest: river, sea, bay, beaches, dunes, saline areas, riparian forest, coastal lagoons and "ullals" form the natural landscape of the Delta and holds a wide range of organisms adapted to different environments that generate the wealth of species that qualifies the Delta. But it has to be specified that the strong humanization and transformation of most of the deltaic plain to croplands have added new environments that have become very important ecosystems for the diversity of flora and fauna: the rice fields and the "huerta".