Eira is a reef dive located off the southern coast of Helsinki, Finland. The site features depths ranging from 20 to 47 metres, with shallower sections providing a calm environment for cold-water diving. Visibility typically fluctuates between 5 and 10 metres. Due to water temperatures ranging from 2 to 10 degrees Celsius, a drysuit and the proficiency to operate one are essential. Access is strictly by boat, and divers must remain vigilant for boat traffic. It is mandatory to deploy a surface marker buoy before ascending to the surface. Check locally for current boat access arrangements before planning your visit, as there are no fixed facilities on-site.

Jussaroe II is a reef dive located off the coast of Porkkala, Finland. The site features a reef structure at depths between 11 and 17 metres, suitable for beginner divers. Divers access the site via boat, where they encounter mild currents and visibility ranging from 5 to 10 metres. Water temperatures fluctuate significantly throughout the year, ranging from 2 to 15 degrees Celsius. Due to these cold conditions, a drysuit or thick wetsuit is essential for all dives. Divers should maintain awareness of variable currents and confirm surface conditions with their skipper before entry.

Keulakuvahylky is a wreck dive located in the Turku Archipelago, resting at depths between 14 and 18 metres. The site is accessed by boat, situated 6500 metres from the shore. Divers encounter cold water conditions, with temperatures ranging from 2 to 13 degrees Celsius, making dry suits the recommended equipment. Visibility is limited to approximately 5 metres, requiring divers to stay close to the structure. The site is suitable for beginner divers, though the wreck presents risks of entanglement. Due to active boat traffic in the area, divers should maintain proximity to their ascent line and deploy a surface marker buoy before surfacing.

Bengtskaer is a boat-access reef located in the Turku Archipelago. The site features a reef structure descending from 15 to 32 metres. While rated for beginners, the depth requires careful monitoring, and the cold water temperatures ranging from 2 to 12 degrees Celsius necessitate appropriate thermal protection such as a drysuit. Visibility typically fluctuates between 5 and 10 metres. Divers should remain aware of potential surf, cold water exposure, and frequent boat traffic in the area. Entanglement risks exist within the structure, and conditions can shift rapidly. Facilities at the site are not confirmed, so check locally for boat charter availability before planning a dive.

Kiskon Avolouhos is a shore-entry site located on the southern coast of Finland, offering a combination of a wall and an artificial reef. The site reaches depths between 2 and 11 metres, providing a suitable environment for beginners. Divers and snorkellers can expect mild currents and visibility ranging from 2 to 5 metres, which varies depending on local conditions. The site is accessible for night diving, allowing for exploration of the artificial structure in low-light conditions. Due to the freshwater environment, cold water is a consistent factor, and the use of a drysuit or a thick wetsuit with appropriate thermal protection is essential for all visitors.

Kisko is a shore-entry reef dive located on the southern coast of Finland. The site features a reef that descends to depths between 15 and 21 metres, offering a controlled environment for divers to practice buoyancy and depth management. Visibility is typically around 5 metres, making a torch useful for observing the temperate reef habitat. The site is suitable for those early in their diving journey due to the lack of current. Divers should exercise caution regarding sharp rocks present on the reef. As facilities are not guaranteed on site, confirm current access and local requirements with nearby dive contacts before visiting.