The Ulla estuary Nature · Dodro, Sar, A Coruña Image of Dodro, not of the place itself. At the southern end of the concello the Ulla opens out into the ría of Arousa, in a stretch where the tide comes up the channel and the silts sustain shellfish beds and an intense presence of herons and ducks. Photo: Fumedecaroso (CC0) What to see and do in Dodro