The Thau Basin agglomeration Community (now Sète Agglopôle Méditerranée — SAM) has in its territory important retro-littoral wetlands belonging to the coastal units “Bassin de Thau” and “Etangs Palavasiens”. Each wetland is covered by a management plan drawn up in consultation with local stakeholders. These management plans consist of numerous preservation and restoration actions that meet the twofold objective: — restoration and conservation of biodiversity reservoirs and ecological continuitys with a strong sensitivity to changes in environmental conditions and anthropogenic pressures, — restoration of wetland functionalities by ensuring water management that promotes good conservation status of sites, maintaining the ad hoc role of natural zone of expansion of waters, maintaining the improvement of good water quality. These various sites form a real coastal frame on the territory of the agglomeration. The implementation of these management plans is therefore a coherent action at the level of the territory with a view to preserving the ecological functionalities of these sites.