Magnetic Fields Lead Salmon Home

The migration of salmon has always been inspiring, and new research published February 7 in the journal Current Biology sheds some light on how they manage to navigate seas to reach their river of birth: magnetic fields.  “To find their way back home across thousands of kilometers of ocean, salmon imprint on [i.e. learn and remember] the magnetic field that exists where they first enter the sea as juveniles,” explains Nathan Putman, a post-doctoral researcher at Oregon State University and lead author on the study. Via National Geographic.

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  • http://www.facebook.com/albert.jamet Albert Jamet

    Since the magnetic field is always changing ,as any sailor knows, they do not go back up the right river .If there is a few rivers in the same area.