character: Ocean Explorer
topic: Coral Reefs and Their Importance
grade: 4
subject: Science
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character: Dolphin Dan
topic: Biodiversity in Marine Ecosystems
grade: 4
subject: Science
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character: Coral Queen
topic: The Role of Coral Reefs in the Ocean
grade: 4
subject: Science
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character: Fishy Friends
topic: How Biodiversity Helps Marine Life
grade: 4
subject: Science
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