Iles Kneiss avec leurs zones intertidales. 07/11/07; Sfax; 22,027 ha; 34°22'N 010°20'E . Located at the center of the Gulf of Gabès and noted for its remarkably high tidal variation of about 2m amplitude, a vast depression surrounded by marine subtidal aquatic beds, intertidal mud and sand flats, intertidal marshes and sandy shores. These islands, about 3.5km from the mainland, consist of 4 subislands which emerge from the sea at high tide but are surrounded by vast mud and sand flats at low tide. The dominant marine vegetation is Cymodocea nodosa. This site is the most important area for migratory waders in the Mediterranean zone, and over 330,000 waterbirds have been counted on this wetland. It is a breeding ground for the little Egret (Egretta garzetta), common Redshank (Tringa tetanus), Slender-billed Gull (Larus genei) and a wintering ground for the Spoonbill (Platalea leucorodia), the Greater Flamingo (Phoenicopterus ruber), etc. The shores of the islands hold a wide variety of shellfish which are exploited visiting population. The islands are not inhabited but are visited by humans for shell collection for exportation to Italy. Despite the introduction of collection licenses in 1988, overexploitation of shell remains a problem. Ramsar site No. 1704. Most recent RIS information: 2007.