character: Dr. Coral Reef
topic: Role of Coral Reefs in Oceanic Ecosystems
subject: Geography
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character: Captain Ocean Explorer
topic: Exploration of Marine Biodiversity
subject: Geography
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character: Professor Wave Dynamics
topic: Impact of Waves on Coastal Ecosystems
subject: Geography
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character: Marine Biologist Susan
topic: Importance of Various Marine Habitats
subject: Geography
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