Coral bleaching is a major phenomon affecting coral reefs around the world. An initial database of bleaching observations was compiled by UNEP-WCMC using a variety of sources. This database has been expanded by Dr. J. Oliver, Mr. Y. Yusuf and Ms. Nurulhuda Ahmad Fatan from WorldFish, using information from the ReefBase database, the Great Barrier Reef Marine Park Authority (GBRMPA), the CoralList, and other sources of information. This dataset also includes observations indicating no bleaching