The Reefs at Risk Revisited report provides a detailed assessment of the status of and threats to the world's coral reefs. It evaluates threats to coral reefs from a wide range of human activities, and includes an assessment of climate-related threats to reefs. It also contains a global assessment of the vulnerability of nations and territories to coral reef degradation. 

This is the first Reefs at Risk project to incorporate data on global‐level threats. These data not only enable estimations of current and imminent reef condition, but also to project trends well into the future. For the global‐level threats, new models were not developed, but rather incorporated existing data from partner organizations on past thermal stress, future thermal stress, and ocean acidification. These data have enabled considerations of impacts to date and the potential future effects of ocean warming and acidification on reefs to 2030 and 2050 using climate projection scenarios.