character: Marine Biologist
topic: Dolphins and Echolocation
grade: 11
subject: Biology
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character: Oceanographer
topic: Ecological Role of Dolphins
grade: 11
subject: Biology
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character: Conservationist
topic: Impact of Echolocation on Dolphin Behavior
grade: 11
subject: Biology
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character: Marine Mammal Researcher
topic: Echolocation Mechanisms in Marine Biology
grade: 11
subject: Biology
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