Welcome to Kosterhavet National Park

The first marine national park in Sweden was established in 2009.
Picture under water of the white coral

​​​​​​​​On the west coast of Sweden, on the border to Norway, the first marine national park in Sweden is established. The marine environment here is influenced by the Atlantic and it includes habitats and species found nowhere else in Swedish waters.

This area, Kosterhavet, is also a valuable recreational resource - it is one of Sweden´s most visited tourist destinations - and has an important inshore fishery, mostly for prawns and Norwegian lobsters. Protecting and maintaining the natural and economic wealth of Kosterhavet is one of the great challenges in managing this new national park. The Kosterhavet National Park was inaugerated in September 2009.

Sweden's highest marine biodiversity

Close to the bottom of the 200 meter deep Koster Fjord the high salinity (34-35‰) and the low temperature (5-7°C) seawater is more typical of the open ocean than of Swedish coastal waters. Sub-surface currents bring larvae of deep ocean species such as brachiopods, sponges and cold-water corals from the Atlantic continental slope. Of the 6000 marine species that have been identified in Kosterhavet, more than 200 are found nowhere else in Sweden.

A national park can promote local development

Kosterhavet is both home and workplace to many people. Nearly 24 000 people live in this, and neighbouring districts. About 1 000 people live in, or immediately adjacent to the national park. Tourism is a major source of income, Kosterhavet has excellent recreational opportunities. The area attracts over 100 000 turists each year.

Read the article Nets, nature and national parks about Kosterhavet written by Gordon McInnes from EEA (European Environment Agency). The 'Our Natural Europe' or 'ONE' stories are being developed by the EEA and its Eionet partners to illustrate in everyday language what biodiversity is and how we’re connected to it.

More information

Kosterhavet National Park
General information folder

Kosterhavet National Park
A summary of resolutions - management plan - regulations

Discovery under the sea

Nature guide for boating

Ursholmen Lighthouse

Saltö Nature Reserve in Kosterhavet

Fishing in the Koster-Väderö Fjord

Kosterhavet proposed Marine Park, Sweden

Sweden´s 29 National Parks
A guide to our finest landscapes

 Schwedens Westküste

A German TV-team visited the West Coast of Sweden and Kosterhavet National Park in the summer 2013. Here you can see the TV-program they made. After 19 minutes (19-23:30) in the program they come to Kosterhavet and they follow Tero Härkönen during his investigation of the seal population in the park. The last minutes (from 40-45 min) of the program are also from Kosterhavet.



 How to get there

Information on how to reach the park and about accommodations and sights you will find at The West Sweden Tourist Board.



National Park Manager

Anders Tysklind +46 10 22 44 741

Marine biologist/National Park Vice Manager

Anita Tullrot +46 10 22 44 742

Conservation biologist/Ranger

Stefan Husár +46 10 22 44 898


Tomas Willdal +46 10 22 44 743

Visitor centre manager

Maria Bodin +46 10 22 44 728

Nature interpreter

Örjan Karlsson +46 10 22 44 708 

 Visitor centre

Welcome to the main information centre - "naturum Kosterhavet" - in Ekenäs on South Koster.

Naturum offers expert help and has displays about the natural history of Kosterhavet.


Opening Hours 2017​​​

January 12 - April 9*
Thur – Sun 11-15

*February 21 - 26 (school holiday)
Tues - Fri 10-17
Sat – Sun 11-17

April 11 - 16
Tues - Thur 10-17
Fri - Sun 11-17

April 20 – June 25
Thur - Sun 11-17

Midsummer Eve closed

June 26 – August 27
All days 10-18

August 31 - October 1 
Thur - Fri 10-17
Sat - Sun 11-17

October 5 - 29
Thur - Fri 10-17
Sat – Sun 11-15

October 31 - November 5 (school holiday)
Tues - Fri 10-17
Sat - Sun 11-17

November 9 - December 22
Thur - Fri 10-15
Sat – Sun 11-15

December 27 - 30
Wed - Fri 10-17
Sat 11-17​

 Audioguides in English, German and Arabic for free.

For guiding and other activities, please contact on

+46 10 2245 400 or e-mail:




 A week in Kosterhavet

In Oktober 2011 Simon from the European Commission visited us for a week. Read his thoughts and reflections in his blog.



Ytre Hvaler National Park

Ytre Hvaler in Norway neighbouring Kosterhavet