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awfullotofocelots t1_isgnrt3 wrote on October 15, 2022 at 9:05 PM

Reply to comment by revolverzanbolt in TIL: Sperms were thought to move by wiggling their tails side-to-side, like eels, for 350 years. But research shows that they roll as they move forward like a spinning top. by vect77

The guy who discovered them was apparently a Dutch amateur who took an interest in lensmaking as a hobby. Possibly had lenses that could magnify 500x.