We Thought We Knew How Sperm Swam, But It Was Just an Optical Illusion – ScienceAlert

Sperm is critical for the fertilisation of almost every living organism on our planet, including humans. To reproduce, human sperm have to swim a distance equivalent to climbing Mount Everest to find the egg.
They complete this epic journey simply by wiggling their tail, moving fluid to swim forwards. Though over 50 million sperm will fail to reach the egg the equivalent to more than six times the entire population of London or New York it only takes one single sperm in order to fertilise an eg…

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