Why Do Salmon Migrate Upstream?

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Salmon enter fast-flowing freshwater systems and swim up their natal rivers to find a suitable spawning location.

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Here, they'll find both plenty of oxygen and shelter for the eggs and juvenile salmon, which help to increase their survival rate. 

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Salmon use both the earth's magnetic field and their highly developed sense of smell to find both their natal river and their exact spawning ground.

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They can swim hundreds or even thousands of miles through the ocean to get back to their natal rivers. 

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During their way up the rivers, salmon reduce their feeding activity to a bare minimum and instead focus on reaching those spawning grounds.

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Salmon can also jump over obstacles to reach their destination in the river.  Incredibly, they can reach a jumping height of up to 12 feet! 

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Get even more incredible facts on the salmon's journey upstream via the link below!

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