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  • Kosterhavet National Park

    Welcome to Sweden’s first marine national park.

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    Photographer: L-O Loo

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    Photographer: M Almse

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    Photographer: Roger Borgelid

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    Photographer: L-O Loo

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    Photographer: A Tysklind

Kosterhavet National Park

Visit Sweden’s one and only marine national park. The National Park lies off the coast in northern Bohuslän and stretches from the town of Strömstad in the north to Grebbestad in the south. These are...

Visitor centre

The national park’s main information centre – “naturum” – in Ekenäs on South Koster, offers expert help. Check out the interactive presentations and films about Kosterhavet and don’t miss the aquarium...


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.

Nature reserves

A nature reserve is created to preserve habitats, flora or fauna, which gives you the opportunity to experience untouched archipelago nature. The Park adjoins a few nature reserves with unique nature...


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. All the way from Ramsö and Ursholmen in the south to Saltholmen in the north are lots of...

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 year-round. Here are a few tips on what...

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 Kosterhavet

Boating in the national parks provides wonderful opportunities to experience the magnificent archipelago. As a traveller at sea, you can contribute to preserving the Parks’ valuable nature for the...

Highlights in Bohuslän

Presentation of the six most visited attractions in Bohuslän. Everything from walking among the rock carvings to meeting endangered spicies at the Nordens Ark, pat starfish at the Havets Hus or enjoy...