Pornichet has three beaches: in the West, the Beach of the Libraires (plage des Libraires), of 2 km length, is part of the Bay of Pouliguen (baie du Pouliguen), shared with La Baule; the border is marked by the Mazy creek (currently underground). In the East, between the Pointe du Bec and the Pointe de la Lande, are located the beaches of Bonne-Source (2.5 km) and Sainte-Marguerite (1.5 km), separated by a rocky head called the Pointe de Congrigoux.