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.

Cala Luna in the Orosei Gulf is a marine site featuring a combination of reefs, caverns, and caves. Divers can explore various swim-throughs, including specific routes designed for sidemount configurations. The site is located 5000 metres from the shore and requires boat access. Conditions vary, with visibility ranging from 10 to 25 metres and mild currents. Depths typically average 14 metres, with a range of 8 to 12 metres. Due to the overhead environment, halocline, and potential boat traffic, this site is suited for intermediate divers. Facilities available at the location include a cafe and toilets.

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.

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.

Piscine di Venere in the Orosei Gulf is a natural swimming pool characterised by freshwater springs emerging from the seabed, which produce a distinct iridescent blue colour. The site features a sandy bottom interspersed with limestone rocks and cave structures. Access is by boat only, and the site is suitable for intermediate divers due to the presence of overhead environments. Conditions include mild currents and water temperatures ranging from 14C to 27C. The habitat supports a variety of Mediterranean reef fish and invertebrates. Divers should be aware of potential hazards including overhead environments, sharp coral, and surf.

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.