Salmon’s Internal Compass

    Published: 06-16-2009
    Views: 6,879
    Researchers at Oregon State University found that salmon have a biological compass that help them find their way.

      Researchers from Oregon State University found that salmon have innate ability to sense Earth’s magnetic field.  So they essentially have a biological compass.  How did they find this out?  Well, they jerked some salmon around basically.  They exposed hundreds of young salmon to different magnetic fields that occur at the latitudinal ends of their oceanic range.  The fish reacted to the “simulated magnetic displacements.”  These were fish in a hatchery that had never left that environment, so researchers knew it was an inherited, not  learned, behavior.  They said “these fish are programmed to know what to do before they ever reach the ocean.”