Lake Kleifarvatn is the largest lake on the Reykjanes Peninsula, covering approximately eight square kilometres. Situated directly atop the Mid-Atlantic Ridge, the site offers a unique geological experience where the North American and Eurasian continental plates diverge. The landscape is defined by volcanic hills and lava formations. Diving here is intended for advanced divers due to the significant depth, which reaches up to 90 metres, and the cold water conditions. Entry is via the shore, and divers may encounter mild currents. The environment supports general temperate freshwater life, though specific species sightings are not confirmed at this location.

Óttarstaðavegur in Minni-Vatnesleysa offers a shore entry leading to a diverse underwater landscape. Divers navigate through a maze of kelp forests and rocky reef structures, transitioning to a black sand drop-off. The site features geothermal gas vents and sandy slopes at depths ranging from 5 to 20 metres, with an average of 12 metres. Due to the cold water temperatures between 4C and 11C, drysuits are required. Conditions include mild currents and visibility between 5 and 15 metres. The habitat supports various temperate marine life, including reef fish and invertebrates. Hazards include cold water, entanglement in kelp, rip currents, sea urchins, and surf.

Minni-Vatnesleysa is a reef and cave dive site located off the coast of southwest Iceland. Divers can explore depths ranging from 10 to 30 metres, with an average depth of 20 metres. The site features mild currents, though surge is a notable hazard, particularly within the cave structures. Visibility typically spans 10 to 30 metres. Due to water temperatures ranging from 4 to 11 degrees Celsius, a drysuit is required. This site is accessible via both shore and boat entries and is suited for intermediate divers. The habitat supports a variety of cold-water reef fish and invertebrates typical of the region.

Bjarnagjá is a lava ravine located on the Reykjanes Peninsula in Iceland, formed by tectonic activity where continental plates shift. The site features a rift that reaches depths of approximately 18 to 20 metres. Divers access the water directly from the shore. The environment consists of a mix of fresh groundwater and seawater, creating a unique brackish habitat. While specific species are not confirmed at this location, the habitat supports general temperate freshwater and brackish life forms. Water temperatures fluctuate between 5C and 11C throughout the year, requiring appropriate thermal protection for all divers.

Vidhey is a marine dive site located off the coast of Southwest Iceland, featuring a mix of reef and kelp forest topography. Divers can explore depths ranging from 10 to 30 metres, with the shallower sections dominated by kelp that transitions into open reef as depth increases. Visibility typically ranges between 5 and 15 metres. Given the water temperatures of 4 to 11 degrees Celsius, drysuit experience and cold-water familiarity are essential. While currents are generally mild, divers must remain vigilant regarding surge and swell, which can develop rapidly. Due to dangerous surf and shore break conditions, boat entry is recommended over shore entry for this site.

Gullkistuvik is a reef site located off the coast of Southwest Iceland. The topography features a reef that descends to depths of 25 metres, with most activity occurring in the shallower sections between 15 and 25 metres. Divers can access the site via shore or boat. Conditions are generally calm with no significant current and visibility ranging from 5 to 10 metres. Due to water temperatures fluctuating between 4 and 11 degrees Celsius throughout the year, a drysuit with appropriate undergarments is essential for all divers. This site is suitable for beginners, though local facilities are limited.

Garður is a shore-entry dive site located at the tip of the Reykjanes Peninsula in Iceland. Divers can access the water from the shore or via a ladder from the pier. The site features a diverse underwater environment characterised by a significant variety of marine algae, which have historically served as a food source for local settlers. Depths at this site reach up to 18 metres. Conditions include moderate currents and cold water temperatures ranging from 5C to 10C throughout the year. Due to the potential for boat traffic, cold water, and currents, divers should exercise appropriate caution during their visit.