珊瑚白化：白化的迷宫珊瑚和健康的泡泡珊瑚并存于水下珊瑚礁

leaching has turned this maze coral (Platygyra sp., likely Platygyra daedalea or Platygyra lamellina) stark white, beside an unaffected bubble coral (Plerogyra sinuosa) showing its natural pale colour. Bleaching occurs when heat stressed coral expels the symbiotic algae in its tissue, leaving the skeleton visible through transparent flesh. The two colonies show how bleaching severity varies between neighbouring corals on one reef. 4K, wide angle, vertical, medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.