Record-breaking ocean heat triggers global mass coral bleaching

Corals (珊瑚) around the world are turning white as ocean temperatures have been hitting record highs. According to the US National Oceanic and Atmospheric Administration (美國國家海洋及大氣管理局), a global mass coral bleaching (珊瑚白化) event  is underway. What is coral bleaching and why does it occur? Corals are small marine animals. They grow with the help of algae (水藻), which gives them nutrients to form a stony skeleton. Reefs (珊瑚礁), ...Read More