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.

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.

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.

Kleifarvatn is a volcanic lake in southwest Iceland featuring an artificial reef structure. Divers can explore this freshwater site at depths between 10 and 15 metres, with an average depth of 11 metres. Visibility is variable, ranging from 5 to 20 metres. The site presents challenging conditions, including moderate currents, cold water temperatures between 2 and 10°C, and overhead environment hazards created by the artificial reef. Shore entry is available with on-site parking. Due to the cold water and potential for shifting visibility, a drysuit is recommended. Divers should maintain strong buoyancy control and situational awareness, as currents can strengthen and boat traffic is present.

Silfra is a unique freshwater fissure located in Thingvellir National Park, Iceland, formed by the tectonic plates of North America and Eurasia drifting apart. This site features a rugged underwater landscape of rock walls and caves. Divers and snorkellers experience exceptional visibility reaching 100 metres in the glacial water. The site is accessed via a shore entry and involves a mild current. With an average depth of 10 metres and a maximum of 18 metres, the environment is suitable for intermediate divers. Water temperatures remain a constant 2 to 4 degrees Celsius year-round. Hazards include the cold water, overhead environments, and the presence of current.

Davidsgja is a freshwater dive site in Thingvellir National Park, Iceland, characterised by its underwater topography and overhead environment. Divers can reach depths between 15 and 21 metres, with visibility typically extending to 30 metres. The site features a mild current and requires a shore entry. Due to the cold water temperatures of 2 to 4 degrees Celsius and the overhead nature of the site, it is suited for intermediate divers with drysuit experience and overhead awareness. Guided tours are available for those visiting the site. The primary experience focuses on the geological structure of the fissure rather than marine life.

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.