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.

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.

Agios Romanos is a reef site located on the southern coast of Tinos Island. The site is accessible via a shore entry and is suitable for intermediate divers. Underwater, the topography consists of rocky edges and a small pier, with depths ranging between 20 and 30 metres. Visibility at the site typically spans 15 to 30 metres, with mild currents present. Divers should be aware of decompression and nitrogen narcosis as potential hazards. Facilities available at the location include parking and showers. The site is also suitable for snorkelling, particularly around the pier and the rocky margins of the bay.

Agios Sostis on Tinos Island features a combination of natural reef and artificial structures, including a pier and a small peninsula. This site is suitable for beginners, offering shallow depths ranging from 1 to 8 metres with an average of 4 metres. Divers and snorkellers can expect mild currents and visibility between 5 and 15 metres. Water temperatures fluctuate seasonally, reaching a high of 25C in August and a low of 16C in February and March. Shore access is available, and the site provides facilities including a cafe, showers, and changing rooms. Typical dives last approximately 45 minutes.

Santa Margarita is a shore-entry snorkeling site located in the Cyclades, Greece, near Tinos Island. The topography consists of a varied seabed featuring a mix of sand, rock, reef, and seagrass. Conditions are generally mild, though snorkelers should be aware of potential surf and the presence of sea urchins. The site is well-suited for beginners, with typical sessions lasting around 60 minutes. Water temperatures fluctuate throughout the year, ranging from 16C in the winter months to 25C in August. This site offers a accessible environment for those looking to explore the coastal shallows of the region.

Pachia Ammos on Tinos Island is a shore-entry snorkel site defined by its golden sand dunes and rocky zones located on both flanks of the beach. The site is suitable for beginners, offering depths ranging from 1 to 10 metres with an average depth of 4 metres. Conditions are generally mild, with visibility varying between 5 and 20 metres. Water temperatures fluctuate throughout the year, ranging from 16C in the cooler months to 25C in August. The swimming season in Tinos typically spans from June to November, providing the most comfortable conditions for snorkelling.

Lychnaftia is a reef site located on Tinos Island, characterised by a beach of black and white pebbles. The southern end of the site features rocky formations that create varied underwater topography. Access is via the shore, and the site is suitable for intermediate divers and snorkellers. Conditions include mild currents and water temperatures ranging from 16°C to 25°C throughout the year. The swimming season typically spans June to November, when water temperatures remain at or above 20°C. Divers and snorkellers should be aware of the presence of jellyfish and sea urchins in the area.