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Arctic shipping noise forces narwhals to go silent, threatening their survival

Arctic shipping noise forces narwhals to go silent, threatening their survival

Deep in the Arctic’s frigid, lightless waters, narwhals—the enigmatic “unicorns of the sea”—are facing an invisible threat that’s forcing them to change behaviors honed over millions of years of evolution. These distinctive whales, recognizable by the males’ long, spiraling tusks,…