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Published in 2017
What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about reefs and the tiny animals—polyps—that build them? Learn all about coral and why warming waters threaten the future of the reef ecosystem.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
Teaching Media Videos or Animations
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2
High resolution satellite map of global vegetation patterns.
Grade Level   3 4 5 6 7 8 9 10 11 12
Maps and Visualizations Teaching Media
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