The Association Sea Project Castelsardo was created to promote all activities related to diving training and protection of the marine environment. Sea Project Castelsardo ASD is authorized to dive in the Marine Protected Area “Island Asinara” and is a member of the Association of Diving Centers Asinara. Sea Project Castelsardo ASD , Padi 5 Star Dive Resort Center is located in Castelsardo, an ancient town of the eleventh century, overlooking the Gulf of Castelsardo is easily reached from Sassari, Porto Torres, Alghero and Olbia. The headquarters of the Sea Project Castelsardo association is located at the tourist port of Castelsardo. The activities take place from April to October, but by reservation it is possible to dive all year round and organize diving courses.