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svamp i traalspor

High concentration of trawl marks north of Svalbard


Before surveying the area, scientists expected to find large areas of untouched seabed – and the odd trawl mark left by fishing boats. What they actually found was nothing like that.


Researchers halved the salmon louse burden at a fish farm


They combined off-the-shelf products with a new, dynamic strategy: moving the salmon down – and up – away from the lice.

myanmar fiskebat 2

Military coup ended research collaboration with Myanmar


Four students were nevertheless able to complete their master’s projects in Norway. They have now returned to their home country with lots of valuable skills.


Over 100 observations of string jellyfish reported


This autumn there has been a big increase in the number of string jellyfish along the coast. This colonial jellyfish can reach lengths of up to 30 metres and it can be fatal to farmed fish.


What happened to the big saithe we tagged off Lofoten?


One was eaten by a whale, another caught by a local fisherman called Håkon, and three returned to the same spot they were tagged a year ago.

Hvilesporer og hyfer i makrellnyre

New species of Ichthyophonus parasite discovered


A new study reveals that the variety of Ichthyophonus found by researchers in mackerel is a new species, and not the one typically found in herring.

HI 027799

Barents Sea: Recommends a capelin quota of up to 62.000 tons for 2023


Low capelin growth and lack of survey coverage on Russian side makes the advice lower than last year.


Tagging a furious shark


For the first time, IMR scientists have successfully tagged a porbeagle with a satellite tag. Now researchers can learn more about what the great white shark's "little brother" does in Norwegian waters.

photo of a stranded whale and researchers studying it

Researchers looked for worms inside stranded whales and found too many to count


“Good news in times of climate change.”

Two haddock larvae.

Exposure to magnetic fields from subsea cables slows down haddock larvae, study finds


Haddock larvae swam more slowly after being exposed in the laboratory to magnetic fields similar to those created by undersea cables connecting offshore wind farms.

Photo of northeast Arctic cod

Barents Sea: Cod quota of maximum 566,784 tonnes recommended for 2023


That is 20 percent lower than the previous year, and lowest since 2009.

rekefiske historisk

Evolution of the shrimp fishery – from 1908 to today


Researchers have digitised shrimp landings data going almost right back to when the Norwegian shrimp fishery started around the turn of the 20th century.

20220624 Capture N7 Sat Camera 20220624 233008

Data collection is up and running again


Parts of the Lofoten–Vesterålen Ocean Observatory are operational and collecting new scientific data again after more than a year of downtime.

freya i frognerkilen

Researchers will collect scientific data from Freya


Data from the autopsy of the walrus could provide valuable information about the animal, for example about its diet.

bakkasund 3

How do spawning cod react to seismic surveys?


Since 2019, IMR scientists have tagged cod in Western Norway only to “bother” them with noise during the spawning season. The aim is to be able to give better advice on seismic surveys.

freya i frognerkilen

The walrus "Freya": – People should keep their distance


That's the clear advice from our marine mammal scientist.

Kriegers Flak

IMR to lead large EU project on kelp and mussel farming within offshore wind farms


The project receives funding of 8,2 million EUR over the course of four years.


Satellite tagging 8-metre sharks


The researchers were able to tag three basking sharks in a single weekend. Read more here.


"Freya" the walrus may be an environmentalist


The pacific oyster is an invasive species that has fixed its grip along the coast of Southern Norway. It might also be the main diet of "Freya" the walrus, currently eating her way in the Oslofjord.

Endre Moen

Artificial intelligence has been taught to "read" salmon scales


Determining the age of salmon from their scales is a task for trained experts. Now artificial intelligence may give them a hand.

sudan forsker fisk

Scientists from Norway and Sudan work together to preserve marine ecosystems


For more than a decade, IMR researchers have been working closely with colleagues from partner institutions in Sudan with a particular focus on small scale fisheries.

Herring school in fish tank.

Spring-spawning herring were tricked into spawning in autumn


When researchers manipulated the hours of daylight in an experimental setup, they got herring to spawn during the "wrong" time of year.

Front vesterisen

007-cruise in the West Ice


Join us to the Arctic on one of our most extreme cruises. Popularly called the James Bond cruise.

Microscope photo of sandeel larvae.

Sandeel larvae undisturbed by subsea cables connecting wind farms


New study on potential impacts of wind industry on marine life in the North Sea.


Researchers find more mackerel have Kudoa parasites


The Kudoa parasite gives the mackerel’s flesh a soft, jelly-like consistency after it is dead. 

Three large halibut.

Researchers identify the halibut’s sex gene


Results from new genetic research could contribute to the further development of halibut as a farmed fish species.

Gadus morhua 29 11 2012 (8) (1)

Supergenes protect cod against environmental changes


Researchers have found that Atlantic cod possess a set of “supergenes” that enable them to quickly adapt to environmental changes. 

Small boat on the fjord with scientific equipment and researchers on board.

Could fish larvae be disturbed by offshore wind farms?


A unique project at IMR aims to shed light on the impact of offshore wind farms on the vulnerable early life stages of fish.

Small fish marked with paper slips on a table as part of a trial.

Fish farmers can influence the traits of fish through the feed


Behaviour and environmental conditions affect how genes are expressed. New research demonstrates how epigenetics may be highly relevant to the aquaculture industry.

A trawl with blue whiting

An opening at the bottom can prevent the trawl bag from bursting


Several hundred tonnes of blue whiting per trawl haul are fished, and accidents can occur. The trawl bag can simply burst because of the catch sizes.