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Rare salmon ascend a Finnish river following dam modifications

Salmon from Lake Ladoga have traveled a record distance up the Hiitolanjoki River.

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Dam removal work enabled this exceptional migration.

Experts are monitoring their progress to assess the ecological impact.

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Hiitolanjoki Rautjärvi Finlande #saumon #migration #barrage #Finlande #écologie #biodiversité

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Auto-synthesis from 1 media source · identified on September 9, 2026

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