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.

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.

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.

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.

Tourna Island offers a reef dive located off Naxos, Greece, suitable for beginners and those looking to refresh their diving skills. The site features a reef environment with depths ranging from 6 to 16 metres, averaging 9 metres. Access to this location is by boat only. Divers can expect mild currents throughout the dive, which typically lasts around 40 minutes. Water temperatures at the site fluctuate seasonally, ranging from 17C in the cooler months to 24C during the peak of summer. The site provides a straightforward underwater topography ideal for training or relaxed exploration.

Drionisi is a boat-access site in Naxos, Greece, featuring a combination of rocky reef and seagrass beds. Divers can explore depths ranging from 2 to 18 metres, with an average depth of 10 metres. The site is suitable for beginners due to the mild currents and visibility typically ranging between 15 and 25 metres. The reef contains sharp rock surfaces, so divers should maintain buoyancy and avoid contact with the substrate. Wearing gloves and full exposure protection is recommended to prevent injury. Typical dives last approximately 55 minutes, allowing ample time to observe the varied topography and the marine life inhabiting the reef edges and seagrass.

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.