Gialos Beach on Naxos is a shallow, shore-entry site suitable for beginners. The seabed consists of sand and seagrass, with depths ranging from 0 to 2 metres and an average of 1 metre. Visibility typically varies between 5 and 15 metres. Snorkellers should be aware of potential hazards including jellyfish, sea urchins, and surf. The site is well-equipped with facilities such as parking, toilets, showers, changing rooms, and a rinse station. Equipment rental, air fills, and guided tours are available nearby. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of seagrass and sandy environments.

Ios Petalotis Cave is a challenging cave dive located in Naxos, Greece, suitable only for advanced divers. The site reaches depths between 20 and 36 metres and requires boat access. Divers navigate an overhead environment where direct ascent is not possible, necessitating strict gas management and buoyancy control. Visibility is generally 30 metres, though moderate currents can shift unexpectedly at depth. Due to the overhead environment and potential for changing currents, divers must remain close to their guide and plan their gas consumption carefully. The typical dive duration is 50 minutes, with water temperatures ranging from 17C to 22C throughout the year.

Mylopotas shore Reef in Naxos, Greece, is a shallow reef system accessible directly from the shore. Ideal for beginners, snorkellers, and discovery dives, the site features an average depth of 5 metres, with a range between 2 and 8 metres. Visibility is high, typically between 15 and 30 metres, with mild currents. The reef supports a variety of Mediterranean reef fish and invertebrates typical of the region. Facilities at the site include parking, showers, a rinse station, equipment rental, and a dive shop. Night diving is available, and the average dive duration is 50 minutes. Divers should be aware of sharp coral present in the area.

Le Grande Bleu is a deep marine site in Santorini, Greece, featuring a combination of reef, drop-off, and cave topography. Divers typically encounter depths ranging from 20 to 48 metres, with an average depth of 30 metres. Due to the significant depth and potential for nitrogen narcosis, this site is reserved for advanced divers. Access is strictly by boat, and conditions include moderate currents with visibility generally between 15 and 30 metres. Water temperatures fluctuate between 17C and 20C throughout the year. A typical dive lasts approximately 45 minutes. Facilities including equipment rental and a cafe are available for visiting divers.

The Arado is a World War Two-era seaplane wreck resting on a sandy seabed at depths between 9 and 35 metres, with an average depth of 10 metres. This site is accessible by boat and features mild currents and visibility ranging from 10 to 30 metres. Divers can explore the fuselage, engine compartments, and wing roots. Due to the overhead environment and potential for entanglement, divers should remain outside the aircraft structure. Scorpionfish are present on the wreck, so exercise caution when placing hands. The site is suitable for beginners, though it requires boat access and careful navigation around the aircraft components.

Vourkaria Beach on Naxos is a pebbly cove featuring a rocky seabed. This site is suitable for intermediate divers and snorkellers, offering depths starting from one metre. Conditions vary, with visibility ranging between 5 and 25 metres and mild currents. Water temperatures fluctuate throughout the year, peaking at 25C in August and reaching a low of 17C in February and March. Access is available from both the shore and by boat. The rocky habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. A typical dive at this location lasts approximately 45 minutes.

Karvounolakos Beach on Naxos is a remote site accessible only by boat. The underwater topography features unique rock formations that extend from the coastline to create a series of small caves and swim-throughs. The site is suitable for intermediate divers and offers a snorkel rating of 4 out of 5. Water temperatures fluctuate between 17C and 25C throughout the year. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. Divers and snorkellers should be prepared for boat-based entry and exit procedures when visiting this coastal location.

Ammoudi of Merichas is a reef site situated near the base of the Merichas cliffs on Naxos. This location features interesting rock structures and is accessible only by boat. Divers and snorkellers can expect visibility ranging from 15 to 25 metres. The site is suited for intermediate divers, with typical dives lasting 45 minutes. Conditions vary, with water temperatures fluctuating between 17C and 25C throughout the year. Be aware that mild to strong currents may be present. The habitat supports a variety of Mediterranean reef fish and invertebrates, though specific species sightings are not confirmed at this location.