KGO ABC World News Tonight With David Muir June 4, 2024 22:37:00
It, the coral is now pure white, bleached. a total loss. >> immediately when we went in, you saw white. big patches. >> as soon as i put my face in the water, my heart dropped into my stomach. >> reporter: coral reefs are a vital natural barrier against storms. they can absorb up to 97% of a wave's energy. and they're a home to countless marine species. if over tense of hundreds of thousands of years, these coral have been around, people might say, come on, they've made it through plenty of heat waves. not like this one. she says, they won't quit. but she worri we need to take action to stop t...