Svenska Högarna-Nassa

Svenska Högarna, Natura 2000 and Nature Reserve
Stora Nassa, Natura 2000 and Nature Reserve
Sailing boat in Lilla Nassa archipelago
Marine diversity at the site

Svenska Högarna-Nassa

  • Country: 
  • Site number: 
  • Area: 
    15,210 ha
  • Designation date: 
  • Coordinates: 
    59°25'N 19°20'E
Materials presented on this website, particularly maps and territorial information, are as-is and as-available based on available data and do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Ramsar Convention concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries.


The Site was originally designated under the name “Stockholm, outer archipelago” of which it forms part. It includes four groups of islands: Stora Nassa, Lilla Nassa, Gillöga and Svenska Högarna. The area constitutes a mosaic of many islands surrounded by shallow marine water, which together are of high conservation value. The Site supports populations of animal species important for maintaining the biological diversity of the European Boreal region, including grey seals and a rich bird life counting over 50 breeding species. The Site is a refuge of great significance in adverse weather conditions and is important to some migrating and breeding waterbirds including velvet scoter Melanitta fusca and ruddy turnstone Arenaria interpres, which is listed as vulnerable in the National Red List. Human activities include recreation, boating, and fishing. The main threats affecting the Site’s ecological character relate to its shipping lanes, tourism and recreation areas. The Site is also known as a Baltic Sea Protection Area and benefits from a marine collaboration plan.

Administrative region: 

  • National legal designation: 
    • EU Natura 2000 (1) - SE0110092 Stora Nassa
    • EU Natura 2000 (2) - SE0110096 Svenska Högarna
    • Nature reserve (1) - Stora Nassa NR
    • Nature reserve (2) - Svenska Högarna NR
    • site of national importance for nature conservation - Stockholms skärgård; Yttre delen
  • Regional (international) legal designations: 
    • Other international designation
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)