Kaloutsi reef is an expansive underwater reef system located off the coast of Kos, Greece. The site reaches depths of up to 30 metres and is accessible exclusively by boat. Divers can expect visibility ranging from 20 to 40 metres, though currents are variable. The site is suitable for beginners, though divers should remain aware of potential boat traffic and depth. Species recorded around this area include European Parrotfish, Turkish Wrasse, White Seabream, Goatfish, Rabbitfish, Fireworm, Eleven-armed Sea Star, various crabs, bream, Brittle Star, Madeira Rockfish, Wide Eyed Flounder, Painted Comber, and snails.

Volcano Bubbles is a volcanic reef in Kos, Greece, defined by active underwater vents that emit gases and warm water. This geological activity creates localized temperature variations across the site. The reef is accessible by boat and offers depths ranging from 5 to 40 metres with mild currents and visibility reaching up to 40 metres. It is suitable for beginners, though divers should be aware of hazards including depth, potential entanglement, strong currents, and the presence of lionfish. Species recorded around this area include Turkish Wrasse, European Parrotfish, White Seabream, Goatfish, Rabbitfish, Eleven-armed Sea Star, Fireworm, crabs, bream, Brittle Star, Madeira Rockfish, Wide Eyed Flounder, Painted Comber, and various snails.

Barracuda Reef in Kos, Greece, offers a diverse underwater topography featuring a reef, wall, pinnacle, and cave system. Suitable for beginners, the site reaches depths between 14 and 30 metres, with an average depth of 20 metres. Divers and snorkellers can access the site via shore or boat. Conditions include moderate currents and visibility ranging from 15 to 30 metres. Water temperatures fluctuate between 17C and 23C throughout the year. Due to the presence of boat traffic, divers should exercise caution during ascents and descents. The site is well-supported by local dive shops and boat charter services, with typical dives lasting approximately 45 minutes.

The Volcanic Fault in Kos is a technical dive site defined by a geological crack that begins at a depth of 22 metres and descends into the depths. This wall and cavern site is accessible only by boat and is suited for advanced divers due to the significant depth and variable currents. Visibility ranges from 10 to 30 metres, depending on conditions. Divers should be aware of potential boat traffic in the area and the risks associated with deep diving. Water temperatures at this site fluctuate between 17C and 21C throughout the year.

Agios Savvas is a reef site located in Kos, Greece, offering accessible shore entry for divers. The site is suitable for beginners and reaches a maximum depth of 7 metres. Conditions are generally stable, with visibility ranging from 20 to 40 metres and mild currents. Water temperatures fluctuate between 17C and 26C throughout the year. The site is also suitable for night diving, with typical dives lasting around 30 minutes. As a shallow reef, it provides a straightforward environment for those developing their skills or looking for a relaxed underwater experience.

The Well is a wall dive located in Kos, Greece, formed by a volcanic fault line. The site offers depths ranging from shallow water down to 40 metres, making it accessible for beginners. Divers can access the site via both shore and boat entries. Conditions are generally stable with mild currents and visibility typically between 10 and 25 metres. Water temperatures fluctuate between 17C and 21C throughout the year. Divers should be aware of the presence of lionfish in the area. The topography is defined by the wall structure and the presence of large sponges.

Pali Corner is a reef and wall dive site located in Kos, Greece. The topography features a mix of rocky terrain and sandy patches, with the wall extending to a maximum depth of 35 metres. Access to this site is by boat only. Divers should be prepared for moderate currents during their descent. The site is suitable for intermediate divers. Species recorded around this area include European Parrotfish, Turkish Wrasse, Rabbitfish, Goatfish, White Seabream, Bream, crabs, Painted Comber, Brittle Star, Madeira Rockfish, Wide Eyed Flounder, Tompot Blenny, Eleven-armed Sea Star, and Fireworm. Divers should be aware of the presence of lionfish in these waters.

Strongyli island is a volcanic site near Kos, Greece, characterised by a cone-shaped topography that drops rapidly into deep water. The site features both a wall and a wreck, offering a varied underwater landscape for advanced divers. Depths range from 3 to 40 metres, with an average depth of 15 metres. Access is strictly by boat due to the distance from shore. Divers should be prepared for strong currents and potential entanglement hazards. Visibility can reach up to 30 metres, and water temperatures fluctuate between 17C and 21C throughout the year. Given the challenging conditions and depth, this site is suitable only for experienced divers.