If you take a plunge in the sea this winter, you might notice it’s warmer than you expect. And if you’re fishing off Sydney and catch a tropical coral trout, you might wonder what’s going on.
The reason is simple: hotter water. The ocean has absorbed the vast majority of the extra heat trapped by carbon dioxide and other greenhouses gases. It’s no wonder heat in the oceans is building up rapidly – and this year is off the charts.
