Mussel rafts of the Ría de Arousa Curiosity · Boiro, Barbanza, A Coruña Image of Boiro, not of the place itself. Galicia keeps close to 3,400 mussel rafts spread over 44 designated areas, and almost seventy per cent of them float in the ría de Arousa; from these wooden platforms hang the ropes on which the mussels fatten for months. Photo: Iago Casabiell González (CC BY-SA 4.0) What to see and do in Boiro