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NowThis Earth


6th, 7th, 8th, 9th, 10th, 11th, 12th


Science, Biology, Earth and Space Sciences

Resource Type

  • Videos, 4 minutes, 15 seconds, CC, Subtitles

Regional Focus



YouTube Video

Why Bold Action Is Needed to Save the World's Coral Reefs

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  • This video emphasizes the importance of protecting coral reefs. 
  • Students learn the importance of mitigating climate change, preventing coral bleaching, and conserving coral reefs. 
Teaching Tips


  • It contains text that enhances understanding of the video.
  • It explains how ocean warming, pollution, and acidification affect coral reefs and why we are running out of time to prevent a complete loss of corals globally.

Additional Prerequisites

  • Students should be familiar with coral reefs.
  • Pausing the video during the text portions may ensure all students are able to read it in time.


  • Teachers could use this to demonstrate the extent to which climate change affects ecosystems. 
  • Teachers could play this video and then conduct a group activity asking students to provide 3 steps to preserve coral reefs.
  • Teachers could use this video to explain coral reef bleaching to 6-8th graders.
  • For more resources on coral reefs, click here, here, here and here.
  • For a lesson plan on Ocean acidification. click here.
  • For an StC lesson plan on carbon cycle and the ocean, click here.
Scientist Notes
This video is critical to deepen knowledge on the state of coral reef depletion by climate change and human activities. It raises concern on the importance of marine ecosystem protection and conservation of marine resources. This is recommended for teaching.
  • English Language Arts
    • Reading: Science & Technical Subjects (6-12)
      • 11-12.RST.7 Integrate and evaluate multiple sources of information presented in diverse formats and media in order to address a question or solve a problem.
  • Science
    • ESS3: Earth and Human Activity
      • HS.ESS3.4 Evaluate or refine a technological solution that reduces impacts of human activities on natural systems.
    • LS2: Ecosystems: Interactions, Energy, and Dynamics
      • HS.LS2.6 Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.
  • Social Sciences
    • Social Science Analysis (K-12)
      • 6.27 Assess individual and collective capacities to take action to address local and regional issues, taking into account a range of possible levers of power, strategies, and potential outcomes.
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