What Are Coral Reefs?
Coral reefs are like underwater cities. They are built by tiny animals called coral polyps that secrete hard shells made of calcium carbonate. These shells stack up over time to form huge structures.
Why Do We Need Them?
Reefs are nursery homes for baby fish. Just like a playground helps kids grow, reefs give young fish a safe place to hide from bigger predators.
How Do They Help Us?
Think of a reef as a sea wall. When big waves come, the reef hits them and breaks their power. This keeps our beaches and houses safe. They also give us food and medicine.
Did you know? A healthy reef is loud! Fish and shrimp make clicking and popping sounds.
Examples
- A baby fish hides in a coral branch to escape a hungry shark.
- A scientist looks at a white coral and says, 'It is bleached and sick.'
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