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Did You Know?

Fish don’t just hear—they feel! To hear, fish rely on their internal ears located inside their skulls, but they also use a remarkable sensory system called the lateral line—a series of receptors running along their sides that detect tiny vibrations and pressure changes in the water. This allows them to sense nearby movement, avoid predators, and swim in perfect sync with others—even in total darkness. It’s like a built-in “sixth sense” that lets them feel their surroundings in ways humans can’t.