Malli Beach in the Cyclades is a reef site characterised by a unique green marble seabed that creates a distinct turquoise water colour. The underwater topography features a rocky landscape at the cove edges, supporting various reef fish and invertebrates typical of the region. With depths ranging from 2 to 10 metres and an average of 7 metres, this shore-entry site is suitable for intermediate divers and snorkellers. Conditions vary, with visibility between 5 and 20 metres and potential for surf and strong currents. Parking is available at the site, and a typical dive lasts approximately 60 minutes.

Agia Thalassa is a secluded, sandy bay located on Tinos Island in the Cyclades. This reef site features rocky margins and shallow depths ranging from 2 to 10 metres, with an average depth of 6 metres. It is well-suited for beginners and snorkellers, as the bay remains calm even during strong Meltemi winds. Divers typically spend 30 minutes exploring the area. Visibility at the site varies between 10 and 25 metres. Entry is via the shore, and currents are generally mild. Water temperatures fluctuate throughout the year, ranging from 16C in the winter months to 25C in August.

Kavalourko, also known as Aeolus Rocks, is a distinctive reef site located on Tinos Island. The topography features dramatic red volcanic rock formations, including a notable carved head of Aeolus visible in the landscape. Divers and snorkellers can explore this shallow environment, which ranges from 1 to 10 metres in depth with an average of 5 metres. Access is via the shore, and conditions typically involve mild currents and visibility ranging from 5 to 20 metres. Due to the presence of surf and sea urchins, caution is advised during entry and exit. The site is well-suited for intermediate divers and offers excellent conditions for snorkelling.

Vathi Beach is a deep, narrow cove in the Cyclades, Greece, characterised by steep underwater drop-offs and rocky walls. The site offers a varied underwater landscape suitable for intermediate divers, with depths ranging from 8 to 18 metres and an average depth of 15 metres. Shore access is available, and conditions typically feature mild currents with visibility between 10 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 16C in late winter to 24C in late summer. Divers should be aware of sharp coral present at the site. The location is also well-regarded for snorkelling, holding a rating of 4 out of 5.

Spanopoula Rock is a white limestone islet located 120 metres off the northern tip of Kea Island in Attica, Greece. This open-sea site features vertical drop-offs and a distinctive underwater tunnel known as the Tunnel of Love. Divers typically experience depths between 14 and 18 metres, with an average depth of 14 metres. The site is accessible only by boat and is suited for intermediate divers due to moderate currents and the presence of an overhead environment. Visibility is consistently high, often reaching 30 metres. Water temperatures range from 16C in winter to 25C in late summer, with typical diving temperatures between 22C and 26C.

Kalidonixi Cove in Attica, Greece, is a sheltered marine site featuring a combination of reef structures and seagrass meadows. Accessible only by boat, the cove offers a shallow environment suitable for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Snorkellers can expect mild currents and visibility typically between 10 and 20 metres. Water temperatures fluctuate throughout the year, ranging from 16C in the winter months to a peak of 26C in August. The site provides a calm setting for observing the underwater topography of the seagrass beds and reef formations.

Spathi Beach on Kea Island offers a rocky reef environment suitable for intermediate snorkellers. The eastern coastline features a rugged rocky shelf that extends into the water. Access is via the shore, and the site is equipped with parking, toilets, showers, changing rooms, and a cafe. Water temperatures range from 16C in winter to 26C in August. Divers and snorkellers should be aware of sharp coral in the area. Conditions generally feature mild currents, though these can vary. A dive shop is available on-site to support water activities.

Glaronisi Rock is a small rocky islet located 60 metres from the shore near Otzias beach in Attica, Greece. This reef site features a rocky terrain with depths ranging from 15 to 30 metres, averaging 25 metres. Access is by boat only. The site is suitable for intermediate divers due to the presence of moderate currents. Snorkellers can also enjoy the area, which holds a rating of 4 out of 5. Divers should be aware of potential hazards, including lionfish and strong currents. Local facilities provide air fills, equipment rental, and guided tours to support diving activities.