Tigani Islet Reef, located near Naxos, features a rocky northern tip characterised by large boulders and crevices. This site is suitable for beginners and offers a shallow environment with depths ranging from 1 to 6 metres, averaging 3 metres. Access is by boat only. Divers and snorkellers can expect mild currents and visibility typically between 15 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 17C in winter to 25C in August. The site provides a 60-minute typical dive duration and is well-regarded for snorkelling, offering a rugged underwater topography.

Agios Nikolaos Beach on Naxos is a sheltered shore entry site suitable for beginners. The reef environment features a mix of sandy and rocky beds with depths ranging from 1 to 3 metres, averaging 1 metre. Visibility at the site varies significantly, spanning 5 to 30 metres, while water temperatures fluctuate between 17C and 25C throughout the year. The site experiences mild currents, making it accessible for snorkelers. Facilities available at the beach include parking, toilets, showers, and changing rooms. Divers and snorkelers should be aware of sea urchins and sharp coral present in the area.

Blue Lagoon (Panteronisia) is a shallow channel situated between the islets of Tigani and Panteronisi near Naxos. This site features a combination of rocky reefs and caves, with a sandy bottom that contributes to visibility ranging from 15 to 30 metres. Depths typically vary between 2 and 18 metres, with an average of 10 metres. Access is by boat, as the site is located 6000 metres from the shore. Conditions are generally mild, making it suitable for beginners and an excellent location for snorkelling. Water temperatures are slightly warmer than the open sea, ranging from 17C to 24C throughout the year.

Panteronisi, located off Naxos, offers a diverse underwater topography including walls, reefs, and a notable sea cave system. The cave features three underwater entrances, with the largest accessible to snorkelers at a depth of 4 to 5 metres. Inside, divers can surface within an air pocket to observe stalactites. The site reaches depths of 40 metres, with an average of 12 metres. Access is by boat only, and conditions typically feature mild currents and visibility ranging from 15 to 30 metres. Due to the presence of overhead environments and significant depths, this site is suited for intermediate divers.

Glaropounda Coves, located on the easternmost islet of the Panteronisia group near Naxos, offers a sheltered environment for divers and snorkellers. The site features shallow rocky beds, reefs, and caves, with depths ranging from 1 to 15 metres and an average depth of 8 metres. Conditions are generally calm with mild currents and visibility typically between 15 and 25 metres. Access to the coves is by boat only. The site is suitable for beginners, with typical dives lasting around 45 minutes. Water temperatures fluctuate throughout the year, ranging from 17C in the winter and spring months to 24C in late summer.

Panteronisi Cave is a marine site located in Naxos, Greece, featuring a combination of cave and reef topography. Divers can explore depths ranging from 4 to 30 metres, with an average depth of 18 metres. Access to the site is by boat only. Visibility typically ranges between 15 and 25 metres, though conditions vary and should be checked locally before diving. The site is suitable for intermediate divers. The reef environment supports a variety of Mediterranean reef fish and invertebrates. Divers should be aware of sharp coral and variable currents. Typical dive times are approximately 30 minutes, and visitors should arrive prepared as local facilities are limited.

Red Rock, located near Pantieronisi, Naxos, is a boat-access dive site featuring a reef and cave system. The site offers depths between 15 and 30 metres, with an average depth of 18 metres. Divers encounter mild currents and visibility ranging from 15 to 30 metres. The cave creates an overhead environment where direct surfacing is not possible, requiring intermediate skill levels and careful air management. The habitat supports a variety of Mediterranean reef fish and invertebrates. Divers should book boat charters early in the day for optimal conditions and ensure they receive a thorough briefing on overhead environment safety before entering the cave.

Delfini Beach in Naxos offers a shallow, accessible snorkeling environment suitable for beginners. The site features a combination of rocky reef and seagrass beds, with an average depth of two metres. Snorkellers can explore the area directly from the shore, where visibility ranges from five to thirty metres. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. While the site is generally calm, visitors should be aware of potential hazards including sea urchins, surf, and occasional strong currents. Facilities at the beach include parking, toilets, showers, changing rooms, and a cafe.