This summer, an intense marine heatwave struck off northwestern Australia, driving sea surface temperatures up to 4°C above the summer average. The large mass of warm water has slowly moved south from the Kimberley region and through the Pilbara, leaving a wave of underwater destruction behind. Now Ningaloo Reef is bleaching in earnest.
The Great Barrier Reef is bleaching too in the waters from Cape York down to Townsville.
