Blue Hole is a deep-water site located 9260 metres from the shore, featuring a distinctive amphitheatre topography. Divers explore a series of reef walls and pinnacles that descend to a seabed at 35 metres. The site is accessible only by boat and is suited for advanced divers due to the depth and moderate currents. Visibility ranges from 15 to 50 metres, with water temperatures fluctuating between 14C and 20C throughout the year. The habitat supports a variety of Mediterranean reef fish and invertebrates, though specific sightings are not confirmed. Divers should be aware of the deep nature of the site and the potential for strong currents.

Secca dell'Ammiraglio is a pinnacle, reef, and wall site located in Italy. Divers access the site by boat to explore the north-east face of the islet and a submerged canyon. The topography ranges from 5 to 28 metres in depth. The site is suited for intermediate divers due to moderate currents and the presence of sharp coral. The habitat supports a variety of reef fish and invertebrates typical of the region. Divers should be prepared for variable conditions and ensure they are comfortable managing moderate currents during their descent and exploration of the wall and canyon structures.

Piramide is a series of pinnacles located off Punta Canneddi, featuring a prominent main pinnacle that resembles a pyramid. Divers can explore the walls and rock passages, descending from the tip down to a sandy seabed at 35 metres. This site is suited for advanced divers due to the depth and requires boat access. Conditions are generally mild, though the site is deep. Water temperatures range from 14C in winter to 20C in early autumn. Night diving is permitted at this location.

Secca di Porto Leccio is a submerged reef and wall site located 1500 metres offshore. The topography drops from the surface to a maximum depth of 35 metres. This site is suitable for beginners, though divers must remain aware of variable currents and potential boat traffic. Due to the open water location, boat access is required. Divers should monitor conditions closely before descent and always deploy a surface marker buoy during ascent to remain visible to passing vessels. The site offers a varied profile suitable for those comfortable managing depth and current.

Tana di Gavino is a cave and cavern system located off the coast of Sardegna, Italy. Reaching depths of 20 to 25 metres, this site requires advanced diving skills and mandatory cave certification. Access is strictly by boat. Divers must navigate an overhead environment where haloclines can distort visibility and cause disorientation. While mild currents are typical, conditions can change, necessitating careful monitoring. Due to the technical nature of the site and the presence of haloclines, redundant lighting is essential. Facilities available at the departure point include changing rooms, showers, a rinse station, and gear storage.

Rocca Ruja is a complex site featuring a wall, reef, and canyon system located 5000 metres offshore. Divers encounter depths ranging from 8 to 38 metres, with an average depth of 25 metres. The topography includes a notable wall at 30 metres depth. Access is strictly by boat. Conditions include mild currents and visibility between 20 and 50 metres. Water temperatures fluctuate between 14C and 20C throughout the year. Due to the depth and potential for strong currents, this site is suitable for advanced divers only. Night diving is permitted at this location. Equipment rental and air fills are available for visiting divers.

Punta li Francesi is a reef site located in the La Maddalena Archipelago, Italy. Accessible only by boat, the site features a depth range of 5 to 30 metres with an average depth of 15 metres. The reef offers manageable conditions with mild currents and visibility ranging from 10 to 30 metres. The shallower sections at 5 metres allow divers to acclimatise before descending to the deeper structure. The site is suitable for beginner divers. Water temperatures fluctuate between 14 and 21 degrees Celsius throughout the year, requiring appropriate thermal protection. The habitat supports a variety of reef fish and invertebrates typical of the region.

Vignola Mare Beach is a shore-entry reef dive located in the La Maddalena Archipelago, Italy. The site features a shallow reef profile with depths ranging from 7 to 10 metres, averaging 8 metres. It is suitable for beginner divers, offering a relaxed pace with mild currents. Visibility is variable, spanning 10 to 30 metres. Divers should be aware of potential hazards including surf, shore breaks, rip currents, sea urchins, and seasonal jellyfish. Parking is available at the site. Water temperatures fluctuate between 14C and 25C throughout the year, necessitating appropriate thermal protection for the season.