Latest / The Midnight Encyclopedia: Stories for Sleep
How fish gills work - whispered ASMR for sleep
Underwater without lungs? Discover the high-tech filtration system operating right beneath the surface.In this episode of The Midnight Encyclopedia, we dive beneath the ocean's surface to explore how fish extract dissolved oxygen directly from water. Learn about the feathery structures known as lamellae (luh-MEL-ee) and the clever mechanics of Counter-Current Exchange—the biological process that allows fish to pull up to 85% of oxygen out of a single breath of water.
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