Isosaaren yhteyslaituri is an artificial reef located in the Helsinki and Southern Coast region of Finland. The site offers depths ranging from 10 to 27 metres, making it suitable for advanced divers. Access requires a boat to reach the entry point, despite the shore-entry classification. Divers should expect cold water temperatures, often near 0°C in April, necessitating the use of a drysuit. Visibility typically ranges between 5 and 10 metres, and currents are generally mild. The artificial structure provides a hard substrate for local marine life, which consists of temperate Baltic reef species and invertebrates. Divers should be prepared for entanglement risks and carry redundant cutting tools.

Talviainen is a shallow freshwater reef site located on the southern coast of Finland. Accessible directly from the shore, the site features depths ranging from 5 to 10 metres. The environment is generally calm with no current, providing a suitable location for beginner divers. Visibility typically ranges between 5 and 10 metres. Divers should remain vigilant regarding potential entanglement hazards around the reef structure. As this is a freshwater habitat, the site supports various temperate freshwater fish and invertebrates. Facilities at the entry point are unconfirmed, so it is recommended to contact local dive operators for information regarding available amenities before planning a trip.