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The secret lives of baby fish | TED-Ed

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Coral reef fish, like the yellow tang surgeonfish, begin life in a fascinating and weird way – as tiny floating larvae! These babies are capable of drifting thousands of miles on ocean currents, far from the reefs where they were born. Amy McDermott describes how these tiny trekkers travel across vast oceans, searching for the far-flung reefs they will one day call home.

If you were a biologist interested in coral reefs, how might you study the large-scale geographic movements of tiny baby fish?

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