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New study shows salmon navigate with magnetic map

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YAKIMA — When salmon return to the Yakima River every year, it’s easy to marvel at how after years at sea, these fish find their way home to spawn in the tributaries where they were reared.

But the salmon’s navigational prowess is more than great memory — juveniles leaving the Yakima Basin don’t just swim downstream to the ocean, they navigate to the specific ocean areas where their ancestors fed, despite having never been there before.

Scientists at Oregon State…

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