The Gulf of Asinara is located in the sea of Sardinia North West between the homonymous Island North, capo Falcone in the West and capo Testa in the East. On the coast overlooking the towns of Stintino, Porto Torres, Sassari, Sorso, Castelsardo and Valledoria and Badesi, Trinità d'agultu e Vignola, Olbia and Santa Teresa di Gallura. The coastline is dotted with beaches a few kilometres long, among the most famous from Stintino towards Badesi: Balai, la Pelosa, le Saline Ezzi Mannu and Fiume Santo (are several beaches joined together to form a single beach), the small beaches within Porto Torres (as the Balai Beach), the Platamona beach several kilometers long, reaching to the beaches at Lu Bagnu (Castelsardo) , to close the beaches of Valledoria, Badesi, Trinità d'agultu e Vignola and the Red Island. Submarine canyon in Castelsardo is a deep gorge at the bottom of the sea and the Centre of the Gulf of Asinara descends from the continental slope to the North West.