What's happening to the extensive coral reefs underwater off the coast of Virgin Islands National Park? This 13-minute documentary dives into the challenges facing the long-living organisms that are coral reefs. Listen to National Park Service expert Jeff Miller as he describes the importance of coral to the underwater ecosystems and the immense threats of coral bleaching and coral disease.

Thanks to Princeton Tonight, Sophia Kim-Brookes, and Noah Mihan for producing this documentary at a crucial time.