Established by the Ministry of the Environment in 2002, it falls entirely within the territory of the municipality of Alghero and since 2009 has been recognized as a specially protected area of Mediterranean interest. Originally the protection project included the area of Capo Caccia and Isola Piana, and only later were the areas of Porto Conte Bay and the promontory of Punta Giglio to Capo Galera added.

The more than two and a half thousand acres between sea,
rocky cliffs and low, sandy coastline that
constitute the Marine Protected Area Capo Caccia –
Isola Piana enclose a real treasure chest
of biodiversity, due to the high number of habitats and
species of high conservation interest that
are found there. It is located in the administrative territory
of Alghero, Sardinia, a city in the north-
west of the island. It is classified as an Area
Specially Protected Area of Mediterranean Interest.