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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Astrid Raunsgard and Yann Czorlich, NINA, at Lake þingvallavatn, the largest natural lake in Iceland.

SeaSalar-team presenting salmon research at the NoWPaS 2020 workshop in Iceland

Astrid Raunsgard and Yann Czorlich were two of 35 PhD students and early career postdocs from 12 countries who met for five days by scenic Laugarvatn in Iceland.

Trends in ocean temperatures affect the thermal habitat of Atlantic salmon during summer and autumn, but not during winter

Since 2008 we have tagged more than 1000 adult salmon from the Alta River with temperature sensing data storage tags in order to understand more about ocean migration and habitat use while at sea.
River Lakselva, where the tagged female came from, and the site at Bear Island where she was recorded three weeks later, are shown with yellow stars on the map. Photo: Eva B. Thorstad

Super-quick ocean migration by a salmon tagged this spring

We tagged adult salmon with satellite tags in the River Lakselva in May. Surprisingly, three weeks later one of the ladies was already at Bear Island, far out in the Atlantic Ocean, 855 km away.