With an area of over 930 km² (360 mi²), the Camargue is Western Europe’s largest river delta (technically an island, as it is wholly surrounded by water). It is a vast plain comprising large brine lagoons or étangs, cut off from the sea by sandbars and encircled by reed-covered marshes which are in turn surrounded by a large cultivated area.
The Camargue is home to more than 400 species of birds and has been identified as an Important Bird Area (IBA) by BirdLife International. Its brine ponds provide one of the few European habitats for the greater flamingo. The marshes are also a prime habitat for many species of insects, notably (and notoriously) some of the most ferocious mosquitos to be found anywhere in France. Camargue horses (Camarguais) roam the extensive marshlands, along with Camargue cattle .
The native flora of the Camargue have adapted to the saline conditions. Sea lavender and glasswort flourish, along with tamarisks and reeds.