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Article URL: Sperm Whales blow bubbles to achieve restful, vertical sleep | University of St Andrews news
Comments URL: https://news.ycombinator.com/item?id=49042751
Points: 111
# Comments: 28
Continue reading...
Comments URL: https://news.ycombinator.com/item?id=49042751
Points: 111
# Comments: 28
Continue reading...