When ecological genomicist Christian Voolstra started work on corals in Saudi Arabia in 2009, one of the biggest bonuses to his job was scuba diving on the gorgeous reefs. Things have changed. “I was just back in September and I was shocked,” says Voolstra, now at the University of Konstanz in Germany. “There’s a lot of rubble. The fish are missing. The colors are missing.”
It’s a sad but now familiar story. Earlier this month, the Global Coral Reef Monitoring Network released the first-ever report collating global statistics on corals, documenting the status of reefs across 12,000 sites in 73 countries over 40 years. Overall, they report, the world has lost 14 percent of its corals from 2009 to 2018 — that’s about 11,700 square kilometers of coral wiped out.