A large estuary and bay with mudflats and wet meadows, sand and rocky beaches, woodland, marshes, and agricultural land. The site also includes a harbour.
The site holds 20,000 or more waterbirds on passage and in winter, on a regular basis.
BirdLife International (2019) Important Bird Areas factsheet: Estuaires picards : baies de Somme et d'Authie. Downloaded from http://www.birdlife.org on 25/04/2019.