Ocean Heatwave Threatens Hawaii's Coral - Again

October 3, 2019 02:30 AM
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Hawaii's vibrant reefs are home to amazing populations of corals and fish, which are under growing stress and danger from a spike in  ocean temperatures.  A similar underwater heatwave damaged the reef four years ago. Now, researchers are using divers and satellites to study these corals and find ways to protect them. VOA's Jim Randle has our story.