Ojamo Mine is a flooded industrial site in Finland offering a challenging overhead environment. The dive takes place between 28 and 40 metres, requiring advanced technical and cave diving certification. Divers navigate submerged mine shafts and industrial infrastructure, with visibility typically ranging from 10 to 30 metres. The water temperature remains cold, with a constant 4°C at depth and surface temperatures varying by season. Shore entry is available, with parking and changing rooms provided on-site. Due to the significant depth, decompression requirements, and overhead hazards, this site is strictly for experienced technical divers prepared for cold-water conditions.

Pikkala Sand Pit in Porkkala, Finland, is a shallow shore dive site suitable for beginners. The site maintains an average depth of 3 metres. Water temperatures fluctuate significantly throughout the year, ranging from 1°C in February to 18°C in August. Divers should be prepared for mild currents when exploring this location. Shore access is supported by local facilities, including parking and toilets. As a shallow site, it offers a straightforward environment for those looking to practice basic diving skills in a controlled, accessible setting.

Yttre Adgrund is a shallow reef site located off the southern coast of Finland. Accessible only by boat, this location offers a relaxed environment suitable for beginners, with calm conditions and no current. Divers can expect visibility of approximately 5 metres. Water temperatures fluctuate significantly throughout the year, ranging from 2C in winter to 18C in summer. Due to these conditions, a drysuit or thick wetsuit is recommended during spring and autumn. Divers should remain mindful of their gear configuration and surroundings to avoid potential entanglement risks while navigating the reef structure.

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.

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.

Iso Valkee is a freshwater reef site located in the Helsinki and Southern Coast region of Finland. The site offers a depth range typically between 2 and 24 metres, with an average depth of 3 metres. Divers can access the water directly from the shore. Visibility at the site generally fluctuates between 3 and 8 metres. On-site facilities include parking, toilets, showers, and changing rooms. Divers can also access air fills, guided tours, and boat charter services at this location. The site is suitable for beginner divers.

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.

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.