Animals: Pacific salmon return after 4-7 years at sea to the exa…

Question

Did you know? Pacific salmon return after 4-7 years at sea to the exact river where they were born, sometimes thousands of km away. They use Earth's magnetism as compass and scent memory — they learned the "river cocktail" of scents as juveniles.

Accepted Answer

Pacific salmon return after 4-7 years at sea to the exact river where they were born, sometimes thousands of km away. They use Earth's magnetism as compass and scent memory — they learned the "river cocktail" of scents as juveniles.

Pacifische zalmen keren na 4-7 jaar in zee terug naar de exact rivier waar ze geboren werden, soms duizenden km voorbij. Ze gebruiken aardmagnetisme als kompas en geur-geheugen — ze leerden de "rivier-cocktail" van geuren als jongelingen.

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