character: Sea Guardian
topic: Effects of Pollution on Coral Reefs
grade: 4
subject: Science
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character: Coral Reef Explorer
topic: Understanding Coral Bleaching
grade: 4
subject: Science
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character: Ocean Protector
topic: Impact of Marine Debris on Wildlife
grade: 4
subject: Science
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character: Pollution Detective
topic: Sources of Ocean Pollution
grade: 4
subject: Science
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