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In Cumbria, freshwater pearl mussels in the River Kent can filter up to 50 litres of water each day; their filtration can help improve river water for fish, eels and otters

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In Cumbria, freshwater pearl mussels in the River Kent can filter up to 50 litres of water each day; their filtration can help improve river water for fish, eels and otters

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मूल रिपोर्ट: Economic Times

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