Kastri is a diverse site off Kos featuring a mix of seagrass meadows, rocky reefs, and cavernous structures. Located 90 metres from the shore, the site offers depths ranging from the surface to 25 metres, with an average depth of 5 metres. The area includes beach ruins and the nearby Kastri Islet, making it suitable for both diving and snorkelling. Divers should be aware of moderate currents, potential boat traffic, and the presence of sea urchins. Visibility typically ranges between 10 and 30 metres. Facilities available at the site include parking, air fills, equipment rental, and boat charters.

Cavo Paradiso on Kos Island offers a combination of reef and cave topography. Divers can explore an underwater landscape characterised by rocky outcrops interspersed with white sand patches. The site reaches depths between 8 and 18 metres, with an average depth of 10 metres. Conditions vary, with visibility ranging from 10 to 25 metres and moderate currents present. Access is via the shore, and the site is suitable for intermediate divers. Snorkellers will find the location well-suited to their activity. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of the region. Facilities at the site include gear storage and a cafe.

Cape Krikelos is a challenging reef and wall site located 1000 metres off the coast of Kos, Greece. This drift dive features vertical rock formations and distinctive stone rings known as Krikelos. Divers can expect depths ranging from 8 to 30 metres, with an average depth of 18 metres. Due to strong currents, this site is suitable for advanced divers only. Visibility is high, typically between 20 and 30 metres. Access is by boat only, with typical dive times around 45 minutes. Hazards include strong currents, significant depth, and the risk of nitrogen narcosis.

Limnionas Bay on Kos is a sheltered north-facing cove protected by man-made breakwaters. This site features a mix of natural reef and artificial structures, making it a suitable location for beginners. Snorkellers can explore the rocky perimeter of the bay, which reaches depths between 5 and 16 metres with an average of 10 metres. Access is via a shore entry, and conditions are generally mild, providing a calm alternative when southern winds affect other coastal areas. Facilities at the site include parking, toilets, and showers. Typical sessions last around 45 minutes, with water temperatures ranging from 17C to 25C throughout the year.

Stingray Champagne is a shallow reef site in Kos, Greece, characterised by a sandy bottom featuring volcanic bubbles. The site reaches a maximum depth of 8 metres, making it suitable for beginner divers. Access is by boat only, and divers should remain aware of boat traffic in the area. Conditions are generally mild, with water temperatures ranging from 17C to 26C throughout the year. Species recorded around this area include European Parrotfish, Turkish Wrasse, Rabbitfish, Goatfish, White Seabream, Painted Comber, Bream, crabs, brittle stars, Wide Eyed Flounder, Madeira Rockfish, Eleven-armed Sea Stars, fireworms, and various snails.

Shrimp Cave in Kos, Greece, is an advanced dive site featuring a cave entrance at 28 metres depth. The topography includes a wall and reef system, with the cave interior walls hosting sponges. Divers should be prepared for an overhead environment and depths reaching 40 metres. Access is via a shore entry, and the site typically experiences mild currents. Visibility at this location ranges from 20 to 30 metres. Given the depth and the nature of the cave, this site is suitable only for experienced divers. Dive shops in the area provide guided tours, air fills, and equipment rental for those planning to visit.

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.