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mostly_kittens t1_iyrhexh wrote

Reply to comment by Ichthyologist in Narwhals are vulnerable to ocean noise caused by human activities by marketrent

Passive sonar doesn’t generate any noise.

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Ichthyologist t1_iysatsr wrote

Ah, my mistake. That makes sense. Maybe he said their low gain sonar or something to that effect. I'm going by what I felt and what I remember the seaman telling me six years ago. I'm a biologist, not a sailor.

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