Sperm Join Forces To Swim Together In Stretchy, Gloopy Fluids

Health and Medicine





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Weeee! Now where's that egg? Sebastian Kaulitzki/Shutterstock

Sometimes you have to go it alone, but when the going gets tough, you should probably stick together. That’s certainly what sperm seem to do, at least; when swimming in particularly thick, elastic liquids, they bunch up into little squadrons, but they make a break for it on their own if the fluid becomes less elastic.