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What is the most obscure fact you know?
(lemmy.world)
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this post was submitted on 15 Sep 2025
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They do it for efficiency, like ducklings after their mother. Have you ever seen a large boat from above? The wake spreads out behind it, in this v-shape. It's like a wave following the boat, and the ducklings can "surf" on the v-shaped wave, after their mother, and they don't have to paddle as hard.