Galleria is a cave and cavern dive site situated in the Orosei Gulf between Cala Luna and Cala Sisine. The site features a submerged gallery and various swim-throughs, making it suitable for beginner divers. Access is by boat only. Divers can expect depths ranging from 8 to 15 metres, with an average depth of 12 metres. Visibility typically spans 15 to 30 metres, though conditions include mild currents and an overhead environment. Water temperatures fluctuate significantly throughout the year, ranging from 14C to 26C, with common thermoclines often dropping temperatures to 15C at the 12-metre mark. Night diving is permitted at this location.

Nasello is a combined wreck and reef site located 1609 metres off the coast of Orosei. Divers encounter depths between 30 and 32 metres, requiring intermediate certification and careful management of bottom time. The site features mild currents and visibility ranging from 15 to 30 metres. Access is by boat only. Hazards include potential entanglement within the wreck structure, sharp coral, and stonefish on the reef floor. Thermoclines are common, with temperatures often dropping significantly below 12 metres. Due to the depth and varying water temperatures, a 7mm wetsuit with a hood or a drysuit is recommended outside of the summer months.

S'Abba Meica is a pebble beach located in the Orosei Gulf. This reef site features underwater sulfur springs that provide a distinct sensory experience for snorkellers. The water depth ranges from 2 metres downwards, with visibility typically varying between 10 and 25 metres. Conditions are generally suitable for intermediate snorkellers, with mild currents present. Access to the water is via the shore. Water temperatures fluctuate throughout the year, ranging from 14C in the cooler months to 27C during the peak of summer.

Lungomare Beach in the Orosei Gulf offers a accessible shore dive featuring a long rocky reef and cave structures. The site is suitable for beginners and trainee cavern divers, with depths ranging from 1 to 8 metres and an average depth of 4 metres. Divers can expect mild currents and visibility between 5 and 25 metres. The entry is from the shore, though caution is advised due to slippery conditions and local boat traffic. Facilities include a rinse station, showers, and equipment rental. The site is also suitable for night diving, with typical dive times around 50 minutes.

Sardegna & Tuscany Wreck in the Orosei Gulf offers a diverse underwater experience, combining cave, wreck, and reef topography. Divers can explore depths ranging from 10 to 45 metres, with an average depth of 25 metres. Access is strictly by boat, as the site lies 2000 metres offshore. Conditions include moderate currents and visibility between 15 and 30 metres. Water temperatures fluctuate between 14C and 19C, with thermoclines often occurring near 12 metres. Due to the overhead environments and depth, this site is suitable for intermediate divers with Advanced Open Water certification. A torch is essential for navigating the wreck and cave sections safely.

Protec Sardinia is a technical diving site located in the Orosei Gulf, specialising in cave and cavern exploration. The site features depths ranging from 13 to 48 metres, with an average depth of 14 metres. Access is strictly by boat. Conditions vary, with visibility reaching up to 25 metres and moderate currents present. Due to the overhead environment, deep profiles, and potential for low visibility, this site is suitable only for advanced divers with appropriate technical training. Facilities available at the site include air fills, guided tours, gear storage, and boat charters.

Acqua dolce is a reef site located in the Orosei Gulf, Italy, suitable for beginners and those looking to refresh their diving skills. The site reaches a maximum depth of 18 metres and features mild currents. Divers can access the reef via both shore and boat entries. Water temperatures fluctuate throughout the year, ranging from 14C in the winter months to 25C in late summer. Due to the nature of the area, divers should remain aware of boat traffic and sharp coral structures present at the site.

Cala Biriola in the Orosei Gulf is a coastal site defined by a natural rock arch and a seabed composed of white pebbles and sand. This combination creates a bright environment with visibility ranging from 10 to 30 metres. The site features both reef and cave topography, making it suitable for intermediate divers and snorkellers. Access is available via both shore and boat. Conditions are generally mild, though divers should be aware of sharp coral in the area. Water temperatures fluctuate throughout the year, ranging from 14C in March to 27C in August.