character: Dolphin Dan
topic: How Dolphins Use Echolocation
grade: 4
subject: Science
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character: Dolphin Dan
topic: Understanding Marine Mammals
grade: 4
subject: Science
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character: Dolphin Dan
topic: The Ocean Ecosystem
grade: 4
subject: Science
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character: Dolphin Dan
topic: Adaptations of Sea Creatures
grade: 4
subject: Science
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