The Ekenäs Archipelago National Park protects a unique sample of the islands and coastal waters of the Baltic Sea. It is especially important, that it covers an entire cross-section of the archipelago from the inner zone to the edge of the open sea. The region belongs to the Project Aqua and has been intensively studied and monitored since the beginning of this century. The park is also included in the Baltic Coastal Area Reserves Program under the provisions of the Helsinki Convention.