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  • Kosterhavet National Park

    Welcome to Sweden’s first marine national park.

    Koster sea under the surface with floating eelgrass

    Photographer: Lars-Ove Loo

  • The National Park of Kosterhavet and the island of Ursholmen with red painted cabins.

    Photographer: Mikael Almse

  • Two people are walking a long a beach at South Koster. Tall grass is in the foreground.

    Photographer: Roger Borgelid

  • Lighthouse in wintry archipelago.

    Photographer: Anders Tysklind

Kosterhavet National Park

The national park lies off the coast in northern Bohuslän and is a valuable recreational resource - it is one of Sweden´s most visited tourist destinations.

Visitor centre

You can reach the main entrance to the national park, on South Koster, by one of the Västtrafik ferries from Strömstad. The trip takes about 45 minutes. Free...


At the entry points to follow you will find general information about the park and specific information on the part of the park you are visiting.

Lobster season

The main event of the autumn – the first day of the lobster catching season! In Bohuslän, you can book lobster safaris and lots of different lobster packages on...


Some of the activities on offer here are kayaking, hiking, snorkeling, bird watching and fishing.


The Koster Islands and the surrounding Kosterhavet National Park offer amazing opportunities for kayaking, lots of small islands and rocks with inviting...

When you should visit the Park

In Kosterhavet there is something to see and discover at all times of the year. You can always visit our Naturum visitor centre on South Koster, which is open...

Certified activities in Kosterhavet

See certified activities that aim to offer better experiences and sustainable future. Here you also will find restaurants certified by Västsvenska Mersmak.

Boating in Kosterahavet

As a traveller at sea, you can contribute to preserving the Parks’ valuable nature for the future! Download the folder Cast off on nature´s terms - a guide with...

Expedition Bohuslän

Expedition Bohuslän is an exciting round trip excursion for all ages; especially if you like adventures!