![The Physics of Sperm vs. the Physics of Sperm Whales](https://hight3ch.com/wp-content/uploads/2013/09/sperm-and-whale.jpg)
Traveling is extremely arduous for microscopic sperm — think of a human trying to swim in a pool made of…other humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how fluid will behave, often fluctuating due to size of the swimmer. Aatish Bhatia explores the great (albeit tiny) sperm’s journey.