Landscapes thumb|Mountain landscape in the Razès at Quillan Each natural region of the Aude has its own particular landscape. In the east, lagoons or coastal lakes separate land and sea. These were formed by accumulations of sediments carried down by the rivers Aude, Orb and Hérault. There are many such lakes of brackish water. This environment is demanding for flora and fauna, as it suffers from the rigours of sea, sun, dryness and floods. Halophile (i.e., salt-loving) plants grow there. The area is also noted for the pink flamingo and the white stilt.
Landscapes thumb|Mountain landscape in the Razès at Quillan Each natural region of the Aude has its own particular landscape In the east, lagoons or coastal lakes separate land and sea. These were formed by accumulations of sediments carried down by the rivers Aude, Orb and Hérault. There are many such lakes of brackish water. This environment is demanding for flora and fauna, as it suffers from the rigours of sea, sun, dryness and floods. Halophile (i.e., salt-loving) plants grow there. The area is also noted for the pink flamingo and the white stilt.