Sperm

TOPLINE The 340-year-old notion that sperm swim like “eels in water,” is actually false, say researchers from the U.K. and Mexico whose study—published today in Science Advances—found that sperm roll “like playful otters,” twirling to propel themselves forwards. A spermatozoon. getty KEY FACTS The notion that spermatozoon moves like “a snake or an eel swimming…


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