Researchers tracked a bluefin tuna’s 15 000 kilometre swim across the Atlantic and back
A 250 kilo Atlantic bluefin tuna had a satellite tag attached to its back in the autumn of 2020. A year later, the researchers located the same tuna again outside Florø, Norway’s westernmost town. It had swum the equivalent of more than a third of the way around the equator.
Noise caused sea lice to eat and reproduce less
This parasite costs Norwegian salmon farming almost 500 million euros each year. Could noise be the solution? Sound-emitting speakers weaken the lice's appetite. They fall off more easily and their reproduction drops dramatically, according to experiments in a Norwegian fjord.
More fish found deeper in the ocean
The amount of fish in the world is being reassessed upwards. Some ten billion tonnes of fish that live at depths down to a kilometre are not fished at all. A University of Bergen professor thinks this biomass will be much more important for humankind in the future.
Spawning cod packed with vitamins
Cod migrate from the Barents Sea to the Lofoten Islands in North Norway to spawn every winter. The fishing season for these large spawning cod, called skrei in Norwegian, is currently open. A traditional North Norwegian serving of the fish is a super source of vitamin D.
Standard research fish lacks a standard diet
Zebrafish have been used as a research standard to help scientists expand our understanding of everything from skin cancers to cardiovascular disease. But one Norwegian researcher cautions that research that relies on zebrafish might be less reliable because the fish are not fed a standardised diet.