Afalatosi is a varied underwater site in Santorini featuring a combination of reef, wall, and cave topography. Reached exclusively by boat, the site ranges from 15 to 30 metres in depth, with an average of 17 metres. Visibility typically spans 15 to 30 metres, assisting navigation along the walls and cave entrances. A mild current is common, though divers should be aware that surge and swell can develop, particularly within the cave sections. Due to the depth range and potential for surge, this site is suited for intermediate divers. Divers should monitor conditions closely and coordinate with local operators, as sea states around Santorini can shift with little warning.

Alonaki in Santorini offers a varied underwater landscape for intermediate divers, featuring a combination of reef, wall, drop-off, and cave formations. The site ranges from a shallow reef at 5 metres down to a maximum depth of 30 metres, with an average depth of 15 metres. Visibility typically spans 10 to 30 metres. Divers should be aware of surge and swell near the wall and cave entrance, which can push against these features. Sea urchins and sharp coral are present, requiring careful buoyancy control. Both shore and boat entries are available, allowing for flexible access depending on the daily sea state and wind conditions.

Nea Kameni is located within the Santorini caldera, providing a diverse underwater landscape that includes reef, wreck, and cave formations. Divers can explore depths ranging from 4 to 30 metres, with an average depth of 20 metres. The site is accessible only by boat, situated 1000 metres from the shore. Conditions typically feature mild currents and visibility between 10 and 30 metres. Due to the presence of overhead environments in the cave and wreck sections, as well as active boat traffic, this site is suited for intermediate divers. Night diving is also available. Water temperatures fluctuate between 17C and 24C, with potential variations near the hot springs of Palea Kameni.

Akrotiri Reef in Santorini offers a diverse underwater landscape accessible from the shore. The site features a combination of reef, wall, cave, and wreck sections, providing varied topography for divers. Depths range from 5 to 30 metres, with an average of 15 metres. Conditions are generally manageable with mild currents and visibility between 10 and 30 metres. Beginners should remain in the shallower sections to avoid decompression obligations and nitrogen narcosis risks. Due to the complex layout of the different features, guided tours are recommended for the first visit. Sharp coral and rock edges are present, so divers should maintain distance from the walls and cave structures.

Finikia, located off Santorini, Greece, provides a diverse underwater experience featuring a reef, a wall, and a wreck. Accessible only by boat, the site ranges in depth from 7 to 45 metres. Conditions are generally forgiving with mild currents and visibility between 10 and 50 metres. Due to the presence of boat traffic, divers should always use a surface marker buoy and surface close to their vessel. Guided tours are recommended to navigate the site safely and ensure divers remain within appropriate depth limits for their certification level. The site is suitable for beginners, who can explore the shallower sections of the reef and wall.

Lava Reef in Santorini features volcanic geology comprising a reef, wall, drop-off, and cave. The site is suitable for beginners, with depths ranging from 10 to 23 metres and an average depth of 17 metres. Divers experience mild currents and visibility between 10 and 30 metres. Access is by boat only, with typical dives lasting 50 minutes. Hazards include sharp volcanic rock and coral, sea urchins in crevices, and an overhead environment within the cave. Divers should monitor their depth and buoyancy carefully. Facilities available include equipment rental, air fills, and guided boat tours.

The WWII Boat Wreck near Santorini is an artificial reef resting at depths of 10 to 15 metres, with an average depth of 12 metres. Located 2000 metres from shore, this site requires boat access. The wreck structure features sharp edges and potential entanglement points, necessitating careful buoyancy control. Visibility typically ranges from 10 to 30 metres, though it can fluctuate. The site is suitable for beginners and is open for night diving, which offers a different perspective of the structure. Divers should remain close to their guides, particularly when visibility is low, and avoid entering areas where the exit is not clearly visible.

Pavlos Gulf in Santorini offers a diverse underwater landscape featuring a reef, a wall, and a cave system. The site is suitable for intermediate divers, with depths ranging from 6 to 30 metres and an average depth of 20 metres. Visibility is typically between 15 and 30 metres, supported by mild currents. Divers can access the site via shore or boat. On-site facilities include changing rooms, showers, and air fills, allowing for convenient back-to-back dives. The cave section requires careful planning of air supply and bottom time. The site is accessible year-round, with water temperatures fluctuating between 17C and 24C depending on the month.