La Faute-sur-MerLa Faute-sur-Mer is a former commune in the Vendée department in the Pays de la Loire region in western France. It was merged with L'Aiguillon-sur-Mer to form L'Aiguillon-la-Presqu'île on 1 January 2022.WWW Official SiteGeographyThe river Lay forms all of the commune's eastern border, then flows into the Atlantic Ocean, which forms all of its western border.