A Coral Is Born

From Deep Look

A Coral Is Born
6 min3rd4th5th6thScience
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Summary

Once a year, corals release clouds of tiny bundles that drift, settle, and grow into brand-new coral. Deep Look follows the start of a coral's life and how a single settler can build a whole reef over time.

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All ages

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Teaching resources

Discussion questions

Talk about it

A coral begins as a tiny drifting larva that settles on the seafloor and grows into a polyp. Copying itself again and again, that one polyp can build a reef -- a life cycle that starts very small.

  1. How does a new coral begin its life?
  2. What does the tiny coral larva do before it grows?
  3. How can one settled coral become a whole reef?

Quick work-a-long

Vocabulary: larva, polyp, settle, life cycle.

Try it: Draw the steps from a drifting coral larva to a growing reef. Label each stage with one word.