Festival of a Navalla Activity · A Illa de Arousa, Salnés, Pontevedra Image of A Illa de Arousa, not of the place itself. An event on 27 July devoted to the razor clam, the mollusc extracted by free diving from the sandy beds of the ría; it opens the island's gastronomic calendar, which continues with the mussel and the octopus. Photo: Xosema (CC BY-SA 4.0) What to see and do in A Illa de Arousa