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No one can figure out how eels have sex - Lucy Cooke

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Exploring our Oceans

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From Ancient Greece to the 20th century, Aristotle, Freud, and numerous other scholars were all looking for the same thing: eel testicles. Freshwater eels could be found in rivers across Europe, but no one had ever seen them mate and no researcher could find eel eggs or identify their reproductive organs. So how do eels reproduce, and where do they do it? Lucy Cooke digs into the ancient mystery.

Anguilla Anguilla larvae make one of the longest known marine migrations traveling on ocean currents 6,500km from the Sargasso Sea to the

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About Exploring our Oceans

Exploring our Oceans offers insight into the scientific marvels of the marine world, and the part you can play in uncovering the ocean's mysteries and safeguarding its future. From biology to physics to engineering, understanding our oceans involves a multitude of scientific approaches. Dive into our curated videos and supporting lesson materials, and find out how you can be a part of it all.

Meet The Creators

  • Video created by TED-Ed
  • Lesson Plan created by Luka Seamus Wright

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