Prasonisi is a diverse reef site in the Cyclades, featuring a combination of wall, cave, and cavern topography alongside areas of seagrass. Located 7000 metres from shore, this site requires boat access. Divers can expect depths ranging from 12 to 30 metres, with an average depth of 18 metres. Conditions are generally mild with visibility reaching 30 to 40 metres. The site includes overhead environments within its cave and cavern structures, requiring appropriate training. Water temperatures fluctuate between 16C and 22C throughout the year. Typical dives last approximately 45 minutes, and the site is suitable for intermediate divers. Night diving is also available at this location.

Houlakia Beach is a protected natural monument in the Cyclades, Greece, characterised by a unique pebbled shoreline. The underwater topography features large boulders that create a dramatic landscape with gaps between the stones. Divers can explore this reef environment at depths ranging from 5 to 15 metres, with an average depth of 10 metres. Entry is via the shore, and conditions generally feature mild currents and visibility between 15 and 25 metres. The site is suitable for intermediate divers. Hazards include potential entanglement, sea urchins, and surf. Facilities available at the beach include parking, a cafe, and toilets.

Agia Anna Beach is a sheltered bay in the Cyclades, Greece, offering a shallow environment suitable for both diving and snorkelling. The site features a mix of reef and wall topography with an average depth of 3 metres, ranging from 1 to 4 metres. Entry is via the shore, and conditions are generally mild with visibility between 5 and 15 metres. The site is well-suited for beginners and families, supported by facilities including parking, showers, changing rooms, toilets, and a cafe. Divers and snorkellers should remain aware of boat traffic in the area and the presence of sea urchins on the seabed.

Lia Beach in the Cyclades offers a diverse reef environment suitable for intermediate divers and snorkellers. The site features rocky headlands on both sides of the bay, providing access to depths ranging from 2 to 40 metres. Conditions are generally calm, as the bay is protected from northern winds, with visibility typically between 10 and 40 metres. Shore entry is available, and the site supports night diving. Facilities at the location include parking, toilets, showers, changing rooms, a rinse station, air fills, a cafe, a dive shop, and guided tours. Typical dives last approximately 50 minutes, and the site is highly regarded for snorkelling.

Mersini Beach in the Cyclades is a shore-entry reef site suitable for beginners. The area features a sandy seabed and depths ranging from 1 to 10 metres, with an average depth of 5 metres. Snorkellers can expect mild currents and visibility between 5 and 15 metres. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. Visitors should be aware of sea urchins and potential surf conditions when entering the water. This location offers a quiet environment for snorkelling, with water temperatures fluctuating between 16C and 25C throughout the year.

The Anna II is a 62m cargo ship that sank in 1995 while carrying a cargo of cement. Resting on the seabed in the Cyclades, the wreck remains largely intact and offers opportunities for penetration in select areas. The site is situated 500m from the shore and requires boat access. Divers can expect depths ranging from 18m to 36m, with an average depth of 20m. Conditions feature mild currents and visibility between 10m and 30m. Water temperatures fluctuate between 16C and 21C throughout the year. Hazards include potential entanglement and sharp structures on the wreck. Guided tours, air fills, and equipment rental are available for this intermediate-level dive.

Frangias Beach in the Cyclades features submerged rock reefs suitable for both diving and snorkelling. The site offers depths ranging from 5 to 20 metres, with an average depth of 12 metres. Divers and snorkellers can expect visibility between 15 and 30 metres and mild currents. Access to the site is possible by both boat and a challenging hike from the shore. Water temperatures fluctuate between 16C and 24C throughout the year. Due to the presence of boat traffic and sea urchins, caution is advised during entry and exit. The site is best suited for intermediate skill levels, with typical dives lasting approximately 60 minutes.

Blue Lagoon is a reef and cave site located west of Mykonos near Delos. Accessible only by boat, the site features sandy-bottomed reefs and caves at depths ranging from 5 to 16 metres, with an average depth of 9 metres. Visibility varies between 15 and 50 metres, and currents are generally mild. The site is suitable for beginners and offers excellent conditions for snorkelling. Divers should be aware of overhead environments within the caves, as well as the presence of sea urchins and sharp coral. Facilities including air fills, equipment rental, guided tours, and boat charters are available for visitors.