Despite of the general principle of free public access, some restrictions to movement apply even in Finland.
Diving (or swimming for that matter) is not allowed in harbour areas without a special permission of a harbourmaster.
Landing on bird nesting islands is not allowed during the breeding season.
Grey seal protection areas
With a total area of 192 sq.km of state-owned marine areas, seven protected areas were established in 2001 by a statute to protect the grey seals and their habitats.
All movement is forbidden year round inside an area of half a sea-mile from any island, rock or skerry marked on a map of a protected area. From 16. June through to 31. January movement in other parts of a protected area is allowed, but during 1. February - 15. June a special permit is required.
Using any official sea-lanes marked on the map is always allowed, even when they go through a protection area.
More information can be found on internet address www.metsa.fi/natural/protectedareas/index.htm
Under the Act on Territorial Surveillance, Section 17, the following activities are not allowed without permission within a restricted area:
When engaged in an activity subject to permission in a restricted area, the person in question must carry a permit issued by the supervisory authority and an identity card, which he or she is obliged to present, on request, to the territorial supervisory authority in the supervising function.
Under the Act on Territorial Surveillance, the territorial supervisory authority has the right to give, if necessary, admonitions, warnings and orders to the person who violates or runs the risk of violating this law or the rules and regulations given based on it.
More information, application forms etc. can be found on internet address www.mil.fi/suoja-alueet/index_en.html