character: Robert Ballard
topic: Deep-Sea Exploration
grade: 10
subject: Geography
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character: Jacques Cousteau
topic: Underwater Exploration Techniques
grade: 10
subject: Geography
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character: Sylvia Earle
topic: Ocean Conservation Efforts
grade: 10
subject: Geography
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character: Vladimir Tikhov
topic: Advanced Oceanography Research
grade: 10
subject: Geography
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