The Great Barrier Reef is built of coral. Corals are tiny animals that build a hard exoskeleton and live in colonies.

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Coral reefs are home to many other plants, fish and animals.

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Coral is threatened by climate change, which causes coral bleaching, and by pollution and ocean acidification.

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The donation from this Wildlife Wizards badge goes to Great Barrier Reef Legacy, who are working to save the reef for future generations.