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The Australian teenager making the ocean safer for sharks
Gray nurse sharks are critically endangered, but 16-year-old Shalise Leesfield is on a mission to protect them from further harm.
3:22
• Source:
CNN
Call to Earth
16 videos

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The Australian teenager making the ocean safer for sharks
Puget Sound seal pups on the road to recovery

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The Dutch mastered the sea but its reefs paid the price, so this company is printing new ones
Inside the National Geographic Museum of Exploration

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Why scientists want ice from 600 meters below the surface
Call to Earth: Reviving India's waters

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Bearded vulture on the brink: Conservationists in South Africa and Lesotho race to save this raptor











