Atlantic salmon is a well-studied species, but there are still mysteries of where they reside in the ocean and what impacts their marine survival. ATLANTIC SALMON AT SEA - factors affecting their growth and survival (SeaSalar) is a research program where research institutions join forces to increase the knowledge on Norwegian salmon at sea.

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Location of Atlantic salmon catches per month, given as number of post-smolts. Source: Gilbey et al. 2021.

Understanding the migration routes of Atlantic salmon during their first months at sea

Extensive international collaboration and analysing 30 year’s catches of salmon at sea provide new information on key foraging areas.
Photo: Eva B. Thorstad

Atlantic salmon in a rapidly changing environment - facing the challenges of reduced marine survival and climate change

The global scale of climate change, altered ocean ecosystems and reduced sea survival make these threats to Atlantic salmon difficult - but not impossible - to address. We review impacts and suggest management options in a new article.
Left: Migrations of Atlantic salmon tagged in eight different geographic areas. Release locations post-tagging are shown by squares (from 11 northeast Atlantic river catchments and at-sea at Western Greenland). Crosses show the pop-up location of the tags. Right: Area use during the ocean migration of tagged Atlantic salmon, shown with lines and shades with colours representing salmon from seven different areas. Photo: Audun H. Rikardsen.

Redefining the oceanic migration of Atlantic salmon

Many surprises from tagging Atlantic salmon with pop-up satellite tags. Further north and east than we thought, more use of oceanic fronts, deeper dives and staying in colder water.