character: Bubbles the Fish
topic: Water Pressure and Buoyancy
grade: 4
subject: Science
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character: Sandy the Starfish
topic: Ocean Life and Ecosystems
grade: 4
subject: Science
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character: Crabby the Crab
topic: Saltwater and Freshwater Differences
grade: 4
subject: Science
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character: Shelly the Turtle
topic: Adaptations to Water Pressure
grade: 4
subject: Science
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