Ö/Øresund Patrol

30/08/2026

Nyheder på hjemmesiden 🇩🇰 🇸🇪 Nyheter på hemsidan

Did you know that you can read all our latest news on our website?

We have just published the full report from our participation in Havets Folkemøde last week:

https://www.oresundpatrol.org/news-havets-folkemode-solrod-2026

You can also sign up for our newsletter to receive the latest updates on our work.

We look forward to seeing you online! 😊

Bringing Øresund to the Shore

24/08/2026

🌊 Havets Folkemøde 2026 🇩🇰

We enjoyed being part of the 4th edition of Havets Folkemøde. The alliance of municipalities around Køge Bugt and host this day, that gather ocean enthusiasts and invite ocean curious.

13/08/2026

⛱️ Mød os på Havets Folkemøde i Solrød den 22. august 💦

We are getting ready for a day when the ocean will be celebrated, showcased, and discussed. The event takes place on the shores of Øresund at Solrød Beach.

You can find us by the tents, where we will be demonstrating some of the processes that take place in the ocean using our small test aquariums.

Come and talk with our team of experts, and enjoy some underwater photography.

At 14:30, we will be giving a talk at Havscenen about what the ocean has taught us.

There will be something for the ocean-curious of all ages, and the full programme for Havets Folkemøde is available here:

https://solrod.dk/aktuelt/arrangementer-og-borgermoeder/havets-folkemoede-2026-i-solroed-en-folkefest-i-vandkanten-for-hele-familien

Vi håber vi ses! 🇩🇰 🇸🇪 Hoppas vi ses!

01/07/2026

🌞Tack för en fantastisk helg på Helsingborg Hamnfest 🥳

It was a great pleasure to show this weekend's visitors just how exciting marine life in the Öresund can be, and how easy it is to get acquainted with the seaweed that washes up along its shores.

Through our photo exhibition and seaweed bingo, everyone had the opportunity to discover the many colours of Öresund. Some of our guests even put on masks and snorkels or used water binoculars to explore life beneath the surface for themselves.

A special thank you to Swedbank Sverige for making it possible for us to be present at Helsingborg Hamnfest. Thank you to Johanna Stedt from our advisory board who joined us with her porpoise🐬 expertise, and thank you to Algköket for serving delicious seaweed-inspired food to our guests.

We were happy to be near the ocean on such a warm weekend 🌊

24/06/2026

Havforskning 🇩🇰🇸🇪 Havsforskning

At Øresund Patrol, our underwater activities are centred around marine research projects. There are many fascinating long-term and short-term studies taking place in Øresund, primarily conducted by the four universities in the region, but researchers from beyond Denmark and Sweden are also drawn to this unique sound with its many special characteristics.

Private investors and tech start-ups are increasingly collaborating to develop innovative tools that offer new insights into the underwater flora and fauna. Yet, it is rare for this research - and its results - to reach beyond academic circles. This is unfortunate, as the wealth of research holds countless untold stories.

Our strength lies in not only supporting research projects in the field, but also in translating complex science into compelling, accessible stories for schools, institutions, and wider audiences.

22/06/2026

Möt teamet 🇸🇪 🇩🇰 Mød holdet – Claes Gustafsson

“Diving has been on my mind for as long as I can remember. As a 5-year-old, I used to dress up with ski goggles as a mask and balloons taped to my back as tanks. At age 13, the dream finally came true and on July 14, 1993 - I did my first dive at Kullaberg. It was love at first sight.”

The dream developed into a life path. Claes has taught diving for six years in South Africa, Egypt, and the Philippines. After returning to Sweden and frequently diving the waters of Kullaberg, Claes came across a pair of wolffish that he revisited at least 10 times every year - until one day, they were gone.

After more than three decades of diving around Öresund, Claes has witnessed changes in flora and fauna, with some species disappearing and new ones appearing.

Standing on the shore after a dive, Claes is often asked the same question by people passing by: “What did you see?” He realised that while many are familiar with tropical waters, few know what lies beneath the surface close to home. This became his mission: to show what’s down there - and how to protect it.

Already involved in nationwide projects on marine debris and ghost nets, he set out to expand this work into cross-border collaboration with Danish partners, focusing on his own backyard - Öresund.

In addition to being a diving instructor, Claes is a commercial diver and cave diving explorer. He is currently involved in cave diving exploration in Bosnia and is part of an upcoming expedition to the Britannic - the sister ship of the Titanic - resting in the Aegean Sea at around 120 metres depth.

Claes is co-founder of Öresund Patrol and our Diving Operations Manager. His technical knowledge keeps tanks filled, regulators serviced, and the boat running. He is not only central to our team, but also highly appreciated for his experience, calm mindset, and good sense of humour.

😅Fun fact: First person to dive around the Kullaberg Peninsula from Arild to Mölle in a single dive, covering a distance of 12 km during a 406-minute scooter dive.

📍Favourite place in/around Øresund: Kullaberg

🐟Favourite animal: Havskatt – Havkat – Wolffish (Anarhichas lupus)

21/06/2026

Historien vilar i djupet 🇸🇪 🇩🇰 Historien hviler i dybet

From the surface, Öresund often appears uniform and homogeneous - but beneath it lies a dynamic meeting point of water masses, geology, and history.

Formed after the last Ice Age around 8-10.000 years ago, Öresund is shaped by glacial deposits and shifting sediments. Its seabed ranges from sand to soft clay and silt, which can quickly reduce visibility. At times, the only reference point underwater is the faint beam of a dive buddy’s lamp.

Öresund is relatively shallow, with an average depth of around 12 m, but reaches 50 meters in what is known as Landskrona Djupet. A general rule of thumb is that as the strait widens toward the Baltic Sea, it becomes shallower.

Öresund is an important gateway between the Atlantic system (North Sea via Skagerrak and Kattegat) and the Baltic Sea. Here, a constant density-driven water exchange takes place: low-salinity water flows out of the Baltic near the surface, while denser, oxygen-rich saltwater from the Kattegat moves in along the bottom. This exchange is vital - helping to ventilate deeper Baltic waters and playing a key role in maintaining the sea’s ecological balance.

Öresund not only serves as a connection beneath the surface - but it has also long been one of Northern Europe’s busiest waterways. This is also evident on the seabed, where hundreds of wrecks rest (the exact number remains unknown).

Since 1932, that same traffic has led to a ban on bottom trawling. Yet traces of past fishing practices remain: many wrecks are now entangled in ghost nets - lost fishing gear that continues to impact marine life, reminding us of both past and present human activity.

Over time, the trawl ban has helped protect the seabed, allowing ecosystems to thrive - including some of the largest mussel beds in Northern Europe - and enabling bottom-dwelling species to live relatively undisturbed.

18/06/2026

Havforståelse 🇩🇰🇸🇪 Havskunskap

The ocean is the foundation of all life, yet limited access - both to the depths of ocean itself and to knowledge about it - makes it difficult for many people to truly connect with its importance in everyday life.

That is why one of Øresund Patrol’s core missions is to make OCEAN LITERACY accessible to everyone in the region.

Our team brings years of experience from public events and school visits, where we share ocean science, spark curiosity, and inspire people to seek their own meaningful experiences with the sea.

Every wave tells a story - and beneath the surface lies a wealth of marine research conducted by universities in the region, supported by state-of-the-art technology. Through our cinematic underwater photography, we bring these studies to life and translate them into something engaging and relevant for different communities.

We all learn in different ways. That’s why we aim to connect people to the ocean through multiple approaches: by being present at public events and by developing a digital learning platform that allows everyone to explore ocean knowledge at their own pace.

We believe that ocean curiosity comes naturally - it simply needs a little nurturing. By fostering this curiosity, we hope to build an ocean-aware community around Øresund, inspire the next generation of ocean stewards, and empower people of all ages to take action for our ocean.