We called it "Due Mari", which means "Two Seas", like the beach on the island of Caprera, perched on a thin strip of land nestled between the waters of the archipelago. The intense cobalt blue of the beds of Posidonia and the ravines of underwater rock seen from the surface, the crystalline turquoise of the water that almost seems not to exist, the white thin sand that is lost in the gentle sound of the undertow early morning. A refreshing dip in crystal clear waters before a deep dive.