Ko Myeong-hyo is a third-generation Jeju "haenyeo" or sea woman, who fell in love with the vibrant colors and thriving marine life of South Korea's soft corals when she first began diving off the coast of Jeju island six years ago, looking to harvest seafood for sale. But her most recent dives have caused worry, as rising temperatures and harsher weather brought by climate change have led to many corals slumping over and dying. Nina Liu has more.

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