Grotta Beach in Naxos offers a unique snorkelling experience where the remains of a submerged Mycenaean city lie just offshore. Snorkellers can observe ancient wall foundations and building blocks resting in shallow water, typically between 1 and 5 metres deep. The site consists of both natural reef and artificial reef elements. Entry is from the shore, though conditions can vary with moderate currents and occasional surf. Visibility ranges from 5 to 30 metres. Species recorded around this area include Mediterranean moray, great barracuda, common octopus, Turkish wrasse, and various sea bream. Hazards include sea urchins, sharp coral, and surf. Parking is available nearby.

Graviera/Frouros in Naxos, Greece, offers a diverse underwater experience combining a reef, a wall, and a cave system. Divers can explore this terrain at depths ranging from 12 to 20 metres, with visibility typically between 20 and 30 metres. The site features mild currents, making it suitable for intermediate divers. Access is by boat only, and the site is well-suited for night diving. Maintaining precise buoyancy is essential, as sharp rocks and coral are present throughout the reef and cave sections. Facilities available include air fills, equipment rental, and guided tours.

Marianna is a wreck and artificial reef site located off Naxos, Greece. The site features depths ranging from 5 to 25 metres, with an average depth of 6 metres. Access is strictly by boat. Divers can expect mild currents and visibility typically between 15 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 17C in winter to 23C in late summer. Due to the depth profile, divers should be aware of risks including decompression, nitrogen narcosis, and the hazards associated with deep diving. The site is suitable for intermediate divers and supports night diving. Comprehensive facilities are available, including equipment rental, air fills, and rinse stations.

Agios Prokopios Reef is a shallow, accessible reef located directly off the shore in Naxos, Greece. The site features a rocky shelf that descends to a maximum depth of 6 metres, with an average depth of 3 metres. It is well-suited for beginners and snorkellers due to its mild currents and easy entry. Divers should remain aware of local boat traffic in the area. Species recorded around this area include Great Barracuda, Common Octopus, Mediterranean Moray, Turkish Wrasse, Mediterranean Violet Aeolid, Grey Triggerfish, European Parrotfish, various nudibranchs, and Bream. Facilities including air fills, equipment rental, and a cafe are available nearby.

Agios Nikolas Reef is a shallow rock formation situated 50 metres from the shore near the Saint Nikolaos chapel in Naxos. This site is suitable for beginners, offering an average depth of 4 metres with a maximum of 6 metres. Divers and snorkellers can expect mild currents and visibility ranging from 5 to 15 metres. The site is accessed directly from the shore, with typical dives lasting around 45 minutes. Facilities including parking, equipment rental, and guided tours are available nearby. Be aware of potential hazards from boat traffic and surf in the area.

St Nickolas in Naxos, Greece, offers a varied underwater experience combining a cave system, a wall, and a reef. Reached by boat, the site reaches depths of 30 metres and is suited for intermediate divers. Visibility ranges from 15 to 30 metres. Divers should be aware of mild currents and potential surge within the cave, which can develop rapidly even in calm surface conditions. If surge increases, it is recommended to move to the open wall or reef. Species recorded around this area include Great Barracuda, Common Octopus, Mediterranean Moray, Turkish Wrasse, and various species of bream and nudibranchs.

Swimthrough reef in Naxos features a complex topography of canyons and caves cutting through the reef structure. Divers explore depths ranging from 12 to 25 metres, with an average depth of 18 metres. Access is by boat only, and the site is suited for intermediate divers due to moderate currents that can shift within the passages. Visibility varies between 10 and 30 metres. Maintaining neutral buoyancy is essential to avoid contact with sharp rock and reef surfaces. Guided tours are recommended to navigate the current patterns and the intricate layout of the swimthroughs effectively.

Calypso is a combined reef and wreck site located off Naxos, Greece, offering intermediate divers two distinct environments in one dive. The site ranges from 5 to 20 metres in depth, with an average of 12 metres. Visibility typically spans 15 to 25 metres. Access is strictly by boat, as the site is located 1609 metres from shore. Divers should be prepared for moderate currents that can intensify, particularly between the reef and wreck sections. It is recommended to descend promptly upon entry and stay close to the structure for shelter. Morning dives are advised for more predictable current conditions.