The phrase "annual bleaching" refers to a process where coral reefs lose their color and turn white each year due to different environmental factors. Full definition
«Reefs that will suffer annual bleaching later — known as climate «refugia» — are top priorities because they have more time to respond positively to efforts that seek to reduce bleaching vulnerability,» said Dr. van Hooidonk. (sciencedaily.com)
However, reefs near the equator will experience annual bleaching much sooner, even if emissions reductions pledges become reality. (sciencedaily.com)
If such emissions reductions become reality, many high and low latitude reefs in Australia, the south Pacific, India, Coral Triangle and the Florida Reef Tract will have at least 25 more years before annual bleaching occurs, buying time for conservation efforts. (sciencedaily.com)