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.

Ios Shipwreck is a marine dive site located near Naxos, Greece, featuring the remains of a vessel that sank approximately 50 years ago. The wreckage is scattered across the seabed, complemented by small caves situated near the shore. Divers can expect depths ranging from 12 to 18 metres, with an average depth of 15 metres. The site is accessed by boat and is suitable for intermediate divers. Conditions are generally stable with mild currents and visibility reaching 30 metres. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. Dives typically last around 40 minutes, with water temperatures fluctuating between 17C and 24C throughout the year.

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.

Cape Columbo is a wild, isolated reef site located on the northeast coast of Santorini. The site is geologically distinct due to its proximity to an active underwater volcano, which contributes to geothermal heating of the water. Depths range from 3 to 15 metres. Access is via the shore, though the site is exposed to the open sea and is only recommended for advanced snorkelers on calm days. Conditions are variable, with visibility ranging from 5 to 30 metres and strong currents frequently present. Due to these challenging environmental factors, the site carries a snorkel rating of 2 out of 5.

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.

Ammoudi Reef Wreck in Santorini offers a diverse underwater landscape featuring a reef, a wall, and a wreck. The site is suitable for intermediate divers, with depths ranging from 5 to 30 metres and an average depth of 17 metres. Visibility typically spans 15 to 30 metres, allowing for clear observation of the varied topography. Currents are generally mild, though divers should remain aware of boat traffic in the area. Access is possible via both shore and boat, with parking and cafe facilities available nearby. Dives typically last around 45 minutes, with water temperatures fluctuating between 17C and 24C throughout the year.

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.