News

Hard to catch, may overheat and can’t cope with rough seas – those are just a few of the challenges for fishers targeting the world’s biggest tuna.

Today the UN’s Intergovernmental Panel on Climate Change (IPCC) is launching its special report on the oceans and cryosphere. Geir Ottersen, a scientist at the Institute of Marine Research (IMR) and one of the main authors of the report, is concerned about the changes taking place in the Arctic.

The Arctic cod, the Arctic cousin of the Atlantic cod, is a key species in the northern Barents Sea. The whole ecosystem may therefore be destabilised by the spawning grounds of the Arctic cod shrinking as a result of declining sea ice cover.

Where is the world’s oldest ice found? And what will happen if the Greenland ice sheet melts? Climate scientists Anne Britt Sandø and Vidar Lien have the answers.

Fish communities from southern Norway have consolidated their significant move north. The Barents Sea may become home to as many as 25 new species as a result of climate change.

In a magnetic tank in which researchers can make north become south, “baby” haddock swim northwest.

DNA testing reveals that the world’s biggest tuna cross the ocean frequently.

Smart fishing gear, scientific publications and training new researchers are just a few of the achievements of the Centre for Research-based Innovation in Sustainable fish capture and Pre-processing technology (CRISP).

By analysing their stomach contents and faeces, and multiplying the results by the number of grey seals in Norway, researchers estimated that they consume 8,000 tonnes of fish per year. Saithe, cod and wolffish were their favourite foods.

In the North Atlantic there are several hundred thousand baleen whales that migrate long distances, whereas in the North Pacific there are just a few hundred of them. That is the conclusion of a new study.

We joined “Geir II” on a scientific fishing expedition to Jan Mayen, where significant numbers of spawning cod have been discovered recently.

The data from the Antarctic krill expedition is ready. This is the first estimate of the krill population in the Southern Ocean fishery in 19 years. 

In 1999, researchers caught 50,000 of the juvenile cod’s favourite food in their beach seine. In 2018 that number had collapsed to 500.

In much the same way as humans, mackerel need their own personal space too. Crowding the mackerel during the catch process might have significant consequences when those mackerel end up on our dinner plate.

Field experiments show that seismic activity does not harm this important species of zooplankton: not at all when the air guns are over ten metres away, and with a maximum of 30% higher mortality than controls even in close proximity.

Researchers have documented a leak from the wreck of the Soviet nuclear submarine. However, it poses no risk to people or fish.

In much the same way as humans, mackerel need their own personal space too. Crowding the mackerel during the catch process might have significant consequences when those mackerel end up on our dinner plate.

Climate change and the effects we are already witnessing were key topics in the first State of the Ocean speech by managing director Sissel Rogne.

One hundred fifty years have passed since the birth of Johan Hjort (1869-1948). Best remembered for his groundbreaking theory from 1914 on the natural fluctuations of fish stocks, Hjort paved the way for materials and methods that are used to this day, not least in climate studies.

A review of figures showing the amount of aquaculture in the areas that are, or have been, affected by the harmful algal bloom suggests that it was probably not caused by aquaculture. On the other hand, it cannot be ruled out that emissions of inorganic nutrients from fish farms may prolong the bloom.

The bloom of the alga Chrysochromulina leadbeateri in northern Norway has now lasted a week. It’s impossible to say how long the alga will continue to create problems for farmed fish, but there are some indications that it is becoming less harmful.

Wild fish can escape the deadly algal blooms, but farmed fish is held in cages. That is why the algae currently blooming in Northern Norway are lethal mainly to farmed salmon in the area.

On 24th of May 2019 in the Palais du Luxembourg in Paris, François Houllier, Managing Director of the French Research Institute for the Exploitation of the Sea (Ifremer) and Sissel Rogne, Managing Director of Institute of Marine Research (IMR) sign the renewal of a "Memorandum of understanding" which will govern and facilitate the scientific cooperation between the two institutes.

24 of 100 tagged lobsters survived the fishing season. It was not random which ones were caught, a new study shows.

Harmful blooms of Chrysochromulina leadbeateri have led to the death of salmon in the counties of Nordland and Troms. This species of alga is common along the Norwegian coast.

The Institute of Marine Research advises feeding the beluga whale in Hammerfest if it does not take food on its own.

The fishing vessel “Geir II” has caught spawning cod at Jan Mayen.

“This is new knowledge for us,” says Marine Researcher Bjarte Bogstad.

What measures seven by five metres, weighs 750 kg and is bright orange? Our latest “temp”, who is currently following a predefined course around the North Sea.

Marine researchers took over the famous Bergen restaurant Lysverket for one evening. On the menu, marine delicacies of the future sprinkled with research.

They can travel 8,000 km and dive down 2,000 metres below sea level, but they must always return to the surface to breathe. Whale expert Nils Øien leads us through the world of whales.