How do fish make electricity? - Eleanor Nelsen
Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-do-fish-make-electricity-eleanor-nelsen Nearly 350 species of fish have specialized...
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In 1800, the explorer Alexander von Humboldt witnessed a swarm of electric eels leap out of the water to defend themselves against oncoming horses. Most people thought the story so unusual that Humboldt made it up. But fish using electricity is more common than you might think; and yes, electric eels are a type of fish. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, and find—plus, in rare cases, stun—prey. Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. These fish are divided into two groups, depending on how much electricity they produce. Scientists call the first group the weakly electric fish. Structures near their tails called electr...
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In 1800, the explorer Alexander von Humboldt witnessed a swarm of electric eels leap out of the water to defend themselves against oncoming horses. Most people thought the story so unusual that Humboldt made it up. But fish using electricity is more common than you might think; and yes, electric eels are a type of fish. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, and find—plus, in rare cases, stun—prey. Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. These fish are divided into two groups, depending on how much electricity they produce. Scientists call the first group the weakly electric fish. Structures near their tails called electr...
