The World of Coral Reefs

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Explore the Cities of the SeaA quarter of all ocean life depends on coral reefs! They provide food and shelter for a wide range of fascinating creatures, from sharks and sea turtles to octopuses and colorful fish. Take a deep dive with marine ecologist Erin Spencer to learn all about corals and their stunning world beneath the waves.How to coral reefs help humans?How do tiny animals called coral polyps build a vast ecosystem for thousands of other animals?What are scientists doing to protect the reefs, and how can you help?