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.

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.

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.

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.

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.

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 Hval Wreck is a cold-water wreck site located off the coast of Helsinki, Finland. Resting at depths between 20 and 31 metres, this site is suited for intermediate divers. Visibility is typically limited to 5 metres, requiring methodical navigation and the use of a torch to examine structural details. The water temperature remains low, ranging from 1 to 10 degrees Celsius, necessitating the use of a drysuit. Access to the site is by boat only. Divers should remain vigilant regarding boat traffic on the surface and deploy a delayed surface marker buoy for every ascent.

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.