Coral bleaching event is longest on record
Heat-related damage to corals expected to continue into 2017
![coral in American Samoa](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/06/062116_am_coral-bleaching_free.jpg?fit=860%2C460&ssl=1)
WHITE FRIGHT Warming ocean temperatures threaten reefs around the globe, like this one in American Samoa; the prolonged heat can lead to coral bleaching.
Wendy Cover/NOAA