Cala Dragunara is a sheltered cove located on the eastern side of the Capo Caccia promontory near Alghero. This site features a rocky perimeter and is suitable for beginners, offering depths between 1 and 6 metres with an average of 3 metres. Divers and snorkellers can expect mild currents and visibility ranging from 10 to 25 metres. Access is via the shore, and the site is well-supported by local facilities including parking, equipment rental, and a dive shop. The environment is characterised by its rocky topography and cave formations, providing a straightforward experience for those looking to explore the local marine habitat.

Capo Galera is a rocky headland near Alghero featuring a series of underwater arches and small caves. The site is suitable for intermediate divers, with depths ranging from 5 to 15 metres and an average depth of 10 metres. Divers and snorkellers can expect visibility between 15 and 30 metres. Water temperatures fluctuate seasonally from 14C to 25C, with a thermocline typically occurring at 12 metres where temperatures drop to 15C. Access is available via both shore and boat. Facilities at the location include parking, toilets, showers, changing rooms, a rinse station, air fills, equipment rental, a cafe, a dive shop, boat charter, guided tours, and gear storage.

Scoglio d'Inferno is a pinnacle reef near Alghero that breaks the surface. This site features two arches and reaches a maximum depth of 19 metres, with an average depth of 13 metres. It is suitable for beginners and offers mild currents. Divers frequently encounter white seabream, wrasses, and striped red mullet. Less common sightings include Turkish wrasse, bream, two-banded seabream, and salema porgy. Snails are also commonly observed on the reef. Access is by boat only, and divers should remain aware of potential boat traffic in the area.

The Dolmen in Alghero, Italy, features a diverse underwater topography comprising a reef, wall, and cavern. Suitable for beginners, the site ranges from 5 to 30 metres in depth, with an average of 15 metres. Visibility typically spans 10 to 25 metres, supported by mild currents. Divers can access the site via shore or boat. Due to the depth profile, careful monitoring is required when exploring the wall and cavern sections. Surface conditions necessitate vigilance regarding boat traffic, and the use of a surface marker buoy is recommended upon ascent. Water temperatures fluctuate between 14C and 22C, making appropriate thermal protection essential depending on the time of year.

Cala Bramassa is a reef and cave site located within the Porto Conte Regional Park near Alghero. Situated 1500 metres from the shore, this site features a rocky seabed with depths ranging from 2 to 18 metres, averaging 12 metres. The bay's shape provides protection from most winds, resulting in visibility between 5 and 20 metres. Water temperatures fluctuate between 14C and 26C, with the bay being slightly warmer than neighbouring coves. Access is possible by both shore and boat, though the site is best suited for intermediate snorkellers. Hazards include entanglement, overhead environments within the caves, and sharp coral. Parking is available for visitors.

Isola Foradada Dolmen is a diverse site in Alghero, Italy, featuring a combination of reef, wall, and cave topography. Divers can explore two large boulders that rise near the surface before navigating a short tunnel that transitions from 14 metres to 5 metres depth. The site is accessible by boat and is suitable for intermediate divers, with depths ranging from 5 to 30 metres and an average depth of 14 metres. Conditions include mild currents and visibility reaching up to 20 metres. Hazards to note include boat traffic, sharp coral, and surge. Night diving is permitted at this location, with typical dive times lasting approximately 50 minutes.

Isola Foradada is a limestone rock formation located 5000 metres from the shore near Alghero. The site features vertical walls and a sea cave, with depths ranging from 0 to 15 metres and an average of 14 metres. Access is by boat only. Conditions vary, with visibility between 5 and 25 metres and mild currents. The site is suitable for beginners and offers a 5/5 rating for snorkelling. Night diving is available. Species recorded around this area include wrasses, Mediterranean moray, common octopus, great barracuda, conger eel, various nudibranchs, and crustaceans. Be aware of boat traffic in the area.

The Colonnade is a versatile dive site near Alghero, Italy, featuring a combination of wall, reef, and cavern topography. Divers navigate through a series of windows, swim-throughs, and arches that create distinct light effects. The site is accessible only by boat, located 1000 metres from the shore. With depths ranging from 5 to 18 metres and an average of 12 metres, it is suitable for beginners. Visibility typically spans 15 to 30 metres. A thermocline is present at approximately 12 metres, where temperatures drop to 15°C. Divers should be aware of sharp coral present at the site. Night diving is available, and typical dive times are around 50 minutes.