Mari Ermi is a reef site located in Sardegna, Italy, characterised by a seabed composed of quartz pebbles and rocky outcrops. The site is suitable for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Access is via a shore entry. Conditions include mild currents and visibility that varies from 5 metres upwards. Water temperatures fluctuate between 14C and 26C, and a wetsuit is recommended due to the cool sea temperatures. Facilities available at the site include parking, showers, and toilets. Divers and snorkellers should remain aware of potential hazards, including boat traffic, rip currents, and sea urchins.

S'Arena Scoada in Sardegna consists of a series of small limestone coves featuring golden sand and rocky ridges. This site is suitable for beginners, offering a shallow environment with depths ranging from 2 to 5 metres and an average depth of 3 metres. Snorkellers can explore the rocky structures between the coves, which provide shelter for various marine life. Access is via the shore, and conditions are generally mild with visibility typically between 10 and 20 metres. Water temperatures fluctuate throughout the year, ranging from 14C in February to 26C in August, making it a accessible location for shallow-water exploration.

Cala dei Pastori is a marine site located in Sardegna, Italy, featuring a combination of reef topography and Roman shipwrecks. Situated within a Marine Protected Area, the site is accessible only by boat, lying approximately 9260 metres from the shore. Depths range from 5 to 27 metres, with an average depth of 5 metres. Conditions vary, with visibility typically between 10 and 25 metres and moderate currents. Due to the depth and potential for boat traffic and surf, this site is suited for advanced divers. The location is also highly rated for snorkelling.

Gli Archetti is a reef site located 300 metres off the coast of Sardegna, Italy, near Oristano. This site is suitable for beginners, offering a comfortable depth range between 6 and 12 metres with an average of 8 metres. Divers experience mild currents and consistent visibility of 30 metres. Access is by boat only, requiring local charter arrangements. Water temperatures fluctuate significantly throughout the year, ranging from 14°C in February to 26°C in August, necessitating careful selection of thermal protection. The reef habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region.

Capo San Marco is a reef and drop-off site situated at the southern tip of the Sinis Peninsula near the ruins of Tharros. Divers access the site from the shore, where rocky coves near the lighthouse provide sheltered conditions. The site is suited for intermediate divers, with visibility typically ranging between 15 and 30 metres. Currents are generally mild. Water temperatures fluctuate seasonally, ranging from 14C in February to 26C in August. Facilities available at the site include parking and toilets. Snorkellers also frequent the area, which holds a 4/5 snorkel rating. Divers should be aware of sharp coral present in the environment.

Sa Mesa Longa, known as the Long Table, is a distinctive natural sandstone reef in Sardegna, Italy. The reef acts as a barrier, forming a calm, shallow lagoon that is well-suited for snorkeling. Divers and snorkellers can access the site from the shore, with depths ranging from 2 to 8 metres and an average depth of 5 metres. Visibility varies between 8 and 20 metres, and currents are generally mild. The site is suitable for intermediate snorkellers. Facilities available at the location include parking, toilets, and a cafe. Be aware of sea urchins when entering the water.

Su Pallosu in Sardegna, Italy, is a shore-access site featuring shallow natural pools and rocky sections. The area is suitable for beginners, with mild currents and water temperatures ranging from 14C in February to 26C in August. The site is well-regarded for snorkelling, offering calm, shallow conditions that allow for easy exploration of the rocky terrain. Parking is available for visitors. While the site is known for its resident cat colony on land, the underwater environment consists of shallow rocky formations. Divers and snorkellers should be prepared for variable water temperatures throughout the year.

Torre del Pozzo is a marine site featuring a combination of reef, cave, and cavern topography. The site is named for a natural vertical well in the rock that connects to the sea through an underwater corridor. Divers and snorkelers can explore the entrance of this corridor, where light filters through the rock structure. Access is via the shore, with depths ranging from 2 to 11 metres and an average depth of 6 metres. Conditions include mild currents and visibility typically between 15 and 25 metres. Due to the overhead environment and depth, this site is suited for advanced skill levels.