You crest the last dune and the beach opens below you—a kilometer of sand the color of flour, so fine it flows like liquid through your fingers. Is Arenas Biancas forms the wilder, less-developed section of Porto Pino's shoreline, where beach clubs give way to raw dunes and the only structures are wind-carved juniper shrubs. The sand reflects light with painful intensity, bleached by sun and composed almost entirely of pulverized quartz and shell. You'll need sunglasses even on overcast days.
“The brilliant white sand and expansive dune system create a landscape more desert than Mediterranean.”
Wide white-sand beach with footprints
The beach slopes gradually into water that shifts from pale green at the shore to deep cerulean beyond the sandbars. Shallow lagoons form between the bars where the water warms quickly, attracting families with small children despite the lack of facilities. In spring, sea daffodils bloom white across the dunes, their papery flowers trembling in the maestrale. Lizards dart between clumps of marram grass, and you'll sometimes spot tracks where wild boar descended from the inland hills to drink at dawn.
Behind you, the dune system extends inland for hundreds of meters, a protected landscape of rolling sand ridges. Boardwalks traverse the most fragile sections, but you can walk freely along the beach for as far as your legs allow. The wind is constant here, shaping the dunes into fluid curves and piling sand in miniature crescents behind every shell and stick. By late afternoon the low sun paints the white sand rose and apricot, and the empty beach feels less like Sardinia than some distant planet where water happens to be blue.