Rene Bianca is found at Portisco, in the commune of Olbia. The white beach has very fine sand. It can be reached from the Provincial Road for Portisco. The play of colours offered by this beach which is enlivened by a number of dunes, opens onto a landscape of great beauty which alternates the shining beach with the pink of the rocky outcrops, the green of the Mediterranean shrub and the turquoise-blue of the limpid sea.