Two Views of Coral Reefs: Thriving and Threatened

Coral reefs are beautiful, vibrant ecosystems that house roughly one quarter of all marine species and provide billions of dollars in products and services to humans each year. But they are also vulnerable to human activities – both direct disturbances and small, indirect effects that build up over time. Read about why it's important for coral to be resistant and resilient, in a blog post by Smithsonian marine scientist Dr. Nancy Knowlton.