WWF Oasis Riserva Naturale le Cesine The Cesine Nature Reserve is a natural oasis managed by WWF Italy and is located near the coastal stretch of Vernole. Its name comes from Segine, which means abandoned area. The Reserve consists of two ponds divided by a cord of sandy dunes called Salapi and Pantano Grande. The oasis is characterized by the presence of the diving duck, called the Moriglione, which occurs in the autumn and winter months in the stagnant and brackish areas of the Reserve.