A small group of Cuban dive instructors launched a project to grow corals and replant them in hope to restore part of Cuba's barrier reef. 

The team would collect fragments of coral from the bottom of the ocean and hang them underwater on branches they made from old plastic plumbing and supported by yellowing fishing lines. 

After the corals grow they would be anchored by nails into the rock. 

According to the U.S. National Oceanic and Atmospheric Administration, the world has lost 30 to 50 percent of its coral reefs. Mostly threatened by changing water temperatures, invasive species, pollution, and over-fishing.

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