Simulations reveal that ducklings swimming in a single-file formation behind the parent can achieve a wave-riding benefit whereby the wave drag turns positive. Gives a new meaning to "get your ducks in a row" 🦆@JFluidMech #dynamic #equilibrium #swimming https://t.co/HUmZXhhCcV pic.twitter.com/RxNBEXBQjc

— Journal of Fluid Mechanics (@JFluidMech) October 19, 2021