The phrase "bleaching episodes" refers to the occurrences when coral reefs lose their color and turn white due to the warming of ocean waters. Full definition
That small percentage of «cryptic» polyps often survive severe bleaching episodes and then multiply rapidly over the skeletal remains in a process known as the Phoenix effect. (landscapesandcycles.net)
Researchers examining the impact of climate change on coral reefs have found a way to predict which reefs are likely to recover following bleaching episodes and which won't. (sciencedaily.com)
With luck, it is a sign that the peak of this particular bleaching episode has passed, offering these astonishing reefs a window of recovery. (newscientist.com)