珊瑚白化事件：印度洋中，大脑珊瑚因热应激而白化，旁边是健康的软珊瑚

gyra brain coral shows complete coral bleaching on an Andaman Sea reef, its white skeleton exposed beside vivid Dendronephthya soft coral and pale staghorn coral, illustrating coral bleaching and reef degradation in one frame. Water temperature on this dive reached 31 degrees Celsius, a level associated with thermal stress capable of triggering bleaching. Surrounding soft coral and staghorn colonies show no visible stress. 4K, wide angle, horizontal medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.