The Kronprins Gustaf Adolf is a shipwreck site situated in the Helsinki region, serving as an artificial reef. Divers can explore the wreck at depths ranging from 18 to 21 metres, with an average depth of 20 metres. Access to the site requires a boat, as it is located over 6 kilometres from the shore. Conditions at the site include moderate currents and visibility that fluctuates between 2 and 10 metres. Water temperatures are cold, ranging from 1 to 12 degrees Celsius throughout the year. Due to the environment, divers should be aware of boat traffic, cold water conditions, and low visibility.

The MS Coolaroo is a wreck dive located off the southern coast of Helsinki, resting at depths between 20 and 25 metres. Access to the site requires a boat. Divers encounter mild currents and visibility limited to approximately 5 metres, necessitating methodical navigation of the structure. Given the cold water temperatures ranging from 1 to 11 degrees Celsius, a drysuit and thermal undergarments are essential. The site presents hazards including an overhead environment, significant depth, and entanglement risks, requiring advanced buoyancy control and wreck-diving awareness. Typical dive times are around 45 minutes. Ensure all boat charter arrangements are confirmed locally prior to arrival as on-site amenities are not guaranteed.

Sea Safety Scandinavia is a wreck and artificial reef site located in the Helsinki Region of Finland. Divers access the site by boat, which is situated approximately 6,482 metres from the shore. The site features depths between 19 and 21 metres, with an average depth of 20 metres. Conditions include mild currents and variable visibility ranging from 1 to 10 metres. Due to water temperatures between 1 and 12 degrees Celsius, drysuit use is required. The environment presents risks of entanglement, so divers should maintain attentive buoyancy while exploring the structures. The site is suited for intermediate divers, with typical dive times around 25 minutes.

Kammio is a wreck dive site located in the Helsinki Region of Finland. Access to the site is by boat only. Divers can expect depths ranging from 20 to 30 metres, with an average depth of 25 metres. Conditions at the site include moderate currents and visibility typically between 2 and 5 metres. Water temperatures are cold, fluctuating between 1 and 10 degrees Celsius throughout the year. Due to the nature of the wreck, divers must be aware of hazards including entanglement risks, low visibility, and the overhead environment. This site is suitable for intermediate divers. Facilities available include air fills and gear storage.

Soederskaer is a reef site located in the Helsinki Region of Finland, offering depths between 20 and 25 metres with an average of 22 metres. This site requires boat access and is suited for intermediate divers. Visibility is consistently around 5 metres, necessitating close-range observation. Water temperatures fluctuate significantly, ranging from 1C in winter to 16C in summer, and remain cold at depth throughout the year. Dry suits are compulsory for all dives. While currents are generally mild, strong currents are a potential hazard. Divers should exercise caution regarding sharp rocks and maintain buoyancy control to avoid contact with the seabed. The habitat supports typical Baltic and Gulf of Finland reef life.

Porkkala Cooking Shed is a shore-accessible dive site in Finland featuring a combination of wreck, reef, and artificial reef structures. The site is suitable for beginners, with depths typically ranging between 6 and 8 metres. Conditions at the site vary, with visibility reported between 3 and 10 metres and mild currents. Water temperatures fluctuate significantly throughout the year, ranging from 2C in late winter to 16C in late summer. Divers should be prepared for cold-water diving environments typical of the region.

Kultakaleeri is a reef and seagrass site located in the Helsinki Region of Finland. Accessible only by boat, the site features depths ranging from 7 to 14 metres, with an average depth of 10 metres. Divers should expect mild currents and visibility typically between 5 and 10 metres. Due to the cold water environment, which reaches a maximum of 14 degrees Celsius in summer and maintains a 4-degree bottom temperature, a drysuit is recommended. The site is suitable for beginners, though divers must remain aware of cold water and low visibility hazards. Typical dive times are approximately 45 minutes.

Sundsborg is a wreck dive located 2000 metres offshore in the coastal waters of Porkkala, Finland. The wreck lies at depths between 9 and 19 metres, with an average depth of 17 metres. Divers must use a boat to access the site due to strong currents and the distance from shore. Visibility is variable, ranging from 1 to 10 metres, requiring good buoyancy control and torch discipline. The structure presents entanglement risks and sharp edges, necessitating the use of cutting tools. Given the water temperatures, which range from 2°C to 14°C, a well-sealed drysuit is essential for all dives.