Mercator Ocean International oceanographers analyse the record-breaking temperature of the Earth’s ocean surface, which has reached the highest level recorded since satellite records began, only narrowly exceeding the 2016 record. Our data reveals that currently, multiple regions, such as the North Pacific, eastern South Pacific, the north Atlantic, and areas near New Zealand and Australia are experiencing moderate to severe marine heatwaves. As our climate continues to rapidly warm, new temperature records are being regularly set, and there are predictions of a possible upcoming El Niño event which could give way to further warming.