84 percent of the world's coral reefs are bleaching! Once the vibrant rainforests of the sea, coral reefs are fading fast. They're not just marine wonders – they shelter marine life and protect coastal communities. To mark World Reef Day on June 1, CGTN will launch a four-part special series, Coral Reefs Whisper. Before the full episodes arrive, here's a look at coral bleaching in the real ocean and inside our XR-rendered underwater world.