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5.5 - Coral reefs

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  • ✓Explain that reefs are built by coral polyps and other reef‑building organisms.
  • ✓State the conditions coral polyps need: warm, clean, shallow, well‑aerated, salty water.
  • ✓Distinguish between fringing reefs, barrier reefs, and atolls.
  • ✓Use reef knowledge to explain Caribbean examples and threats (sediment, pollution, warming).
⏱ 0 mins🎯 60 marks
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Imagine snorkelling at Buccoo Reef (Tobago) and seeing bright fish darting between ‘rocky’ ridges. Surprise: those ridges are not rocks at all, they’re living cities built by tiny animals! Coral reefs protect coastlines, support fisheries, and bring tourists…but they are also fragile. In this lesson, you’ll learn what reefs are, how they form, and why the Caribbean must protect them.
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Before today, had you studied coral reefs in school?

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Predict: which statement do you think best describes coral polyp?

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💡Engage
Imagine snorkelling at Buccoo Reef (Tobago) and seeing bright fish darting between ‘rocky’ ridges. Surprise: those ridges are not rocks at all, they’re living cities built by tiny animals! Coral reefs protect coastlines, support fisheries, and bring tourists…but they are also fragile. In this lesson, you’ll learn what reefs are, how they form, and why the Caribbean must protect them.
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