Robo-turtles in fish farms reduce fish stress
Robotic turtles used for surveillance could help prevent escapes from salmon farms. The “turtle robots” are paving the way for a technology that improves monitoring inside sea cages.
Fish and aquaculture
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Arctic light pollution affects fish, zooplankton up to 200 metres deep
If artificial light shines into the Arctic Ocean during the polar night, does it matter? A new paper in Communications Biology says the answer to this is a strong yes.
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.
Resistant salmon lice spread to wild fish
A new study confirms the role of the aquaculture industry in the spread of resistant salmon lice in Norway.
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
Mission control: Norwegian SciTech News has landed!
We’ve changed our name to Norwegian SciTech News — so readers know immediately what they will find here.
Clean water eliminated effects of discharged drugs in fish
The discharge of pharmaceutical drugs is a major problem around the world, but a new study of the freshwater fish burbot shows that there is hope.
Tourism, aquaculture and offshore accidents with Blueye
Blueye is an underwater drone that got its start at NTNU. The drone can be used for serious purposes – such as when it mapped damage to the Norwegian frigate Helge Ingstad – or for entertainment, such as showing cruise passengers the underwater landscape.
Better fish welfare using “sensor” fish
The electronic “sensor” fish measures the physical factors that affect farmed fish during delousing. The results may lead to welfare improvements in salmon farm cages.
Six billion NOK for new Ocean Space Laboratories
Three new fjord laboratories, one in Trondheim, one in Hitra/Frøya and one in Ålesund, along with two test basins in Trondheim are planned as part of the project.
Entrepreneurs aim to end ghostfishing
A small device, developed in Norway, will now be used in the battle against environmentally-unfriendly ghost fishing caused by lost or forgotten fishing gear.
A day in the life of a jellyfish hunter
The oceans are teeming with ever-increasing numbers of jellyfish. These squishy sea creatures can ruin fishing and discourage tourists. But one research group wants to turn this nuisance into pay dirt.
Cheap plant oil can give us healthier salmon
The amount of omega-3 fatty acids in farmed salmon is dropping. But a reasonable and affordable solution may make salmon even healthier to eat.
Plans for a 385-metre fish farm facility in the open sea
An entirely new fish farm design, which looks more like an elongated offshore oil platform than a traditional aquaculture facility, may soon be installed in Norwegian waters.
Teaching the next generation of fish farmers for the aquaculture industry
We need to know more, and teach more people, about aquaculture so we can use the ocean’s resources to the greatest extent possible while protecting the environment.
Raising better salmon
The aquaculture industry typically selects salmon with the right genes for breeding to provide the freshest and biggest fish. A new method has the potential to produce better results.
Nine things to know about microplastics
Picking up a plastic bag from the beach makes a bigger difference than you might imagine.
Researchers are hunting microplastic with jellyfish
In the innovative EU project GoJelly, researchers are working to solve the microplastic challenge by using products from nature itself.
Herring larvae could benefit from an acidifying ocean
Excess CO2 in the atmosphere is making the oceans more acidic. Some studies show that’s bad news for fish, including commercially important species. But not all fish respond the same way.
Improving occupational safety in aquaculture
Aquaculture used to be a secondary income source for Norwegians. Now it’s become big business. Occupational safety has made steady advances, but some areas clearly still need to improve.
Plastic ends up on the ocean floor
According to a new research report, most plastic fragments end up on the ocean floor.
Keeping ocean currents from spreading disease in farmed salmon
Currents in the ocean and fjords spread viruses that are killing large numbers of farmed salmon. Where should fish farms be built? And should they all be in use at the same time? Researchers now know more about how to limit the virus problem.
Secrets of the sea raised from the depths
The mysteries below the ocean’s surface have triggered human exploration and imagination for centuries. New marine robotics now make it possible to explore what goes on in the ocean depths.