They’re happening every year, even in the ‘cool’ La Niña phase. This means that corals have almost no time to recover. They are also being hit with cyclones more often, or at a higher intensity. And the pressure of overfishing and algal blooms only adds to their distress. This is like an athlete in the gym training at a high intensity, multiple times per day, with no sleep, hydration or food. It’s not long before the body breaks down.