National park

Kosterhavets national park

Kosterhavet is Sweden’s only marine national park with its approximately 200 unique animal species and plant species.

From Strömstad in the north to Grebbestad in the south, Kosterhavet offers unforgettable experiences both at sea and on land. A good place to start the visit is at the Visitor Centre Naturum at Sydkoster.

Kosterhavet National Park is a 400 square kilometre area with a unique sea and archipelago environment. It has Sweden’s only coral reefs and many sea creatures that you can’t find anywhere else in Swedish waters. In the national park there is also much to see and discover on land. The wind-waving outer archipelago is a characteristic cultural landscape that is still a living society characterized by fishing, hunting and agriculture, unforgettable experiences both at sea and on land. A good place to start the visit is at the Visitor Centre Naturum at Sydkoster.

Environment & Sustainability

Unique environment

On Koster you can experience a rich and varied nature – from heather moors and vast shins on Nordkoster to Sydkoster’s leaf-rich landscape with a beautiful forest, flower-rich dry meadows and inviting beaches. The Koster Islands Nature Reserve is surrounded by Sweden’s most species-rich sea area, Kosterhavet National Park.


On Koster Islands there are some of Sweden’s most species-rich lands and an interessant cultural history. Stonewalls, hammered trees and old foundations of houses tell of the agriculture and fishing of more timely generations.

In parts of the reserve, efforts are today being made to recreate Koster’s landscape as it looked in ancient times, when the land was more in use and the landscape opened. Grazing animals and plains are important for old in possessions and the barren outlands not to grow again.

Environmental responsibility

Kostergården is part of the Koster Islands and it is important that all of us who stay on the island show respect for nature and the conditions of the islands. It is everyone’s responsibility not to litter, release environmentally hazardous substances into nature, waste the limited fresh water or otherwise to tempt or damage our natural environment.

Thank you for helping to preserve the unique environment of the Koster Islands.

Protection rules National Park

To avoid disrupting the animal and plant kingdom, as well as giving you as a visitor a nice experience in kosterhavet national park, there are certain provisions on what to do, and not do.

Within kosterhavet national park, it is not allowed to:

  • Digging up plants

  • Introduce foreign species or populations

  • Bring dog without a leach

  • Set up a bonfire elsewhere than in designated and prepared places

  • Cycle or drive motor vehicles other than on roads

  • Bring or move stones

  • Picking oysters

  • Hunting

  • Camping on Sydkoster and camping between 10 am and 6 pm on Tenholmarna, Burholmen, Bockholmen, and Store Bror from 1 July to 15 August. Otherwise, camping may take place no more than two consecutive days in the same place

  • Mooring boats or anchor off sandy beaches closer to the beach than 50 metres. Canoes and kayaks may be pulled up on sandy beaches if placed so that beaches are not blocked

  • Tangle and anchor in the same place more than two consecutive days

  • Idle drive motor and use motorized barn unit

  • In some areas drive motorized vessels other than to and from berth.

  • In seal and bird shelter areas, in some areas, go ashore on islands and cut and stay closer to islands and cut than 100 meters, with the exception of marked passages. Seal protection areas apply from 15 May to 15 July. Bird protection areas apply: Mörholmen 1 April – 15 July, Store Soon and Käbblingarna/Lerskär 1 April – 31 July, and Torgrimmen 1 April – 15 August

  • Start or land by aircraft or fly over the area at a lower altitude than 300 meters

  • In bottom protection areas, in certain areas, anchor and use scraper or other tools or methods that may damage the bottoms

  • Without the permission of the County Administrative Board, carry out scientific studies or collect red-listed marine species

  • Organize competitions, camp activities or other organized arrangements with more than 20 participants before consultation scans with the County Administrative Board