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National Geographic Coral Reefs
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How long ago were the first corals formed?
240 million years ago.
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Does hard or soft coral make reefs?
Hard
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What are these small things?
Polyps
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Is coral reef made of rocks?
No, it is made of animals
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What is this?
Giant clam
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How many kinds of hard coral are there?
800
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What are the three reef zones?
Reef flat, Crest, Reef slope
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What is this?
Dugong
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How old are most coral reefs today?
5,000 to 10,000 years old
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What fish can change its skin color?
Cuttlefish
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What is this?
Coral Reef
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What do millions of people eat from the reefs?
Fish
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What damages the reefs?
Pollution / Hot water
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How does this creature hunt at night?
Feels the surface
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What is this fish that uses camouflage to hunt?
Stone fish
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How does this animal hunt at night?
Big eyes
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Where can you find coral reefs?
Around the equator
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