character: Dr. Sylvia Earle
topic: Marine Ecologist, Biodiversity in Oceans
subject: Geography
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character: Jacques Cousteau
topic: Influential Marine Biologist and Ocean Explorer
subject: Geography
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character: Rachel Carson
topic: Environmental Scientist and Author of 'Silent Spring'
subject: Geography
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character: David Attenborough
topic: Natural Historian and Broadcaster Focused on Oceans
subject: Geography
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