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Animal People, Inc. posted an update 5 years, 10 months ago
https://nicholas.duke.edu/news/right-whale-mothers-whisper-their-calves-avoid-attracting-predators
Right Whale Mothers “Whisper” to Their Calves to Avoid Attracting PredatorsAs new moms, North Atlantic right whales tone down their underwater vocalizations and “whisper” to their young calves to avoid attracting predators, a new study by scientists at Syracuse University, Duke University and NOAA Fisheries’ Northeast Fisheries Center finds.