The Densu Delta Ramsar Site is an estuary consisting of an open lagoon, salt pans, freshwater marsh, scrubland, dunes and scattered stands of mangroves. It hosts plant species such as the black mangrove (Avicennia germinans), seashore paspalum (Paspalum vaginatum) and jointed flatsedge (Cyperus articulatus). About 57 species of waterfowl feed and nest in the area, including the little egret (Egretta garzetta), the common ringed plover (Charadrius hiaticula), the curlew sandpiper (Calidris ferruginea), and the rare roseate tern (Sterna dougallii). The Site receives freshwater primarily from the Densu River, which supplies water to about half of the Accra metropolitan area. Furthemore, the entire Site is an important sediment trap and shoreline stabilizer for local communities who rely heavily on the lagoon for commercial fishing, firewood harvesting and salt mining.