2020

Last spring Atlantic salmon were tagged with satellite tags in Southern Norway. Now they have phoned home. 

The water entering the Barents Sea is not as cooled down as it used to. This has a large effect of the climate in the area and may lead to fish and other marine life migrating. 

New analysis of old samples shows that eels in Norway get twice as old as previously thought. 

If our man Ronald gets 10 out of 10, his new “trainee” gets 9. 

What do whales do when nobody is looking? Researchers are trying to find out using audio recordings.

Recently hatched herring do not navigate by compass, but by following the sun.

In a major new initiative, scientists at IMR will study how to get more food from the ocean into our ovens – without putting our health and the environment at risk.

Researchers have combed data from almost 500 fish farms all over Norway. They found only a weak and variable effect of using cleaner fish in the battle against salmon lice.

Below the sea’s surface, the cod spawning season is now well underway. We have trapped cod in a pen rigged with cameras and hydrophones - you can follow the spawning live.

Malnutrition is a bigger problem than hunger in the world today. Researchers hope that a small freshwater fish may prove to be packed with important micronutrients. 

Calanus can be killed by small concentrations of the delousing agent hydrogen peroxide.

Large doses of teflubenzuron kill – small doses cause stiff joints. The question is how small.

Millions of cleaner fish are used in farm cages to eat lice off salmon every year. However, there is limited research into how efficiently they do this job. Now scientists have gone through all published studies in the field – and found large knowledge gaps.

And that is just one of the challenges that seals face in a changing world. 

The Institute of Marine Research’s monitoring of the sea shows that temperatures have fallen in recent years.

Right now, millions of northeast arctic cod (skrei) are migrating from the Barents sea to the Norwegian coast to spawn. They are the lucky few survivors.

The polar cod, a key species in the Barents Sea ecosystem, is struggling with recruitment due to warmer waters and declining sea ice cover. 

Where do young marine researchers go to learn about the latest and greatest sonar technology? To a narrow fjord in western Norway, onboard RV “G.O. Sars”.