UN Sustainable Development Goals: Life Below Water

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Smart site selection can make hydropower greener

Even though new hydropower dam developments are intended to provide green energy, they can drown areas that are rich in plant and animal species. But this kind of collateral damage can be limited by strategic site selection, a new study shows.

Reveals hungry salmon with sound waves

The feed cost represents about 50 percent of the costs of farming salmon. But how do we know if the salmon is hungry or still full? Researchers have rethought to find answers. The result is less wastage and pollution – and enough food for the salmon.

WITH VIDEO

Meet the aquaculture industry’s new maintenance bot

This ROV can fully operate on its own, and follow along with fish’s behaviour and health with its Argus eyes – all while keeping a safe distance. It even inspects the technical standard of the enclosure while it’s at it. Say hi to Mr. CageReporter.

Teaching robots to cooperate underwater

The launch of a new research centre for robotics will provide increased knowledge about the sea with the help of underwater drones and robots. This could impact Norway’s international role as a major power at sea, says centre director.

A man holds a large trout

Why aren’t sea trout thriving anymore?

Sea trout numbers are declining in Norway and scientists don’t know why. They have studied the trout in two rivers in northern Norway’s Nordland county. Soon, sea trout along the entire Norwegian coast will be investigated.

New lessons from the worst oil spill disaster ever

Ten years ago, the Deepwater Horizon accident in the Gulf of Mexico killed eleven men and resulted in the largest accidental oil spill in history. Years of investigations concluded that the drilling crew missed critical warning signals that would have stopped the problem. A new analysis suggests that wasn’t the case.

“Seaweeds may become a profitable piece in the green transition jigsaw”

A unanimous group of research scientists are convinced that kelp may share many of the applications of soya and oil, and that they can also be used to capture CO2. Seaweeds can contribute towards climate-friendly solutions in all sorts of contexts. New know-how about seaweed farming is currently accelerating industrialisation of the sector.

Cement factories can put the brakes on global plastic pollution

Researchers believe that plastic refuse can be used as fuel in cement factories in Asia. If this works, it may provide a solution to two of the planet’s biggest environmental problems – plastic in the oceans and high levels of coal consumption.

Cleaner fish being sacrificed in the fight against salmon lice

Research shows that even fish farmers have doubts as to whether using cleaner fish is an effective delousing method. “Fish farmers tell us that they want a ban on the use of certain species. They’re also very critical of wild-caught cleaner fish being transported,” says researcher Kristine Størkersen. She is one of the scientists who have been helping the Norwegian Food Safety Authority gain an overview of the situation.

A deep dive into subsea monitoring

The coastline of Norway is peppered with more than a thousand oil wells, most of which will be plugged once they’re no longer profitable. They have to be monitored in case they leak — but keeping an eye on them isn’t easy.  A new company offers a different approach that could help.

WITH VIDEO

Following sea trout minute by minute

Sea trout populations have declined sharply. Researchers have studied the life of sea trout by means of acoustic telemetry tags and listening stations. Now they know more about what we need to do to protect the sea trout population.

More people and fewer wild fish lead to an omega-3 supply gap

Omega-3 fatty acids are essential components of healthy diets for both humans and fish. The dramatic increase in fish farming worldwide has boosted the demand for omega-3 fatty acids so much that today’s supply can’t meet demand. Reducing waste and finding new sources can help.

How much microplastic is there in your laundry basket?

Every time you wash clothes, you are releasing microplastics into the sea, but we know little about the amount and distribution of such material from different types of textile. Research scientists are now working on measuring and capturing microplastics in our laundry.

Tracing the journey of microplastics in the Arctic

By now it’s well established that microplastics are a problem in the environment, even in the remotest parts of the planet. But where do different microplastics come from and how they get there, especially in the Arctic?

Six years into the ice — and beyond

The Arctic’s once impenetrable ice cap is melting away, with profound consequences for everything from ocean circulation patterns to fish numbers and diversity. The Nansen Legacy Project, including NTNU biologists, chemists and engineers, is working to better understand what these changes mean for the Barents Sea and the Arctic Basin