Oceans face ‘triple threat’ of extreme heat, oxygen loss and acidification

Climate scientists have been alarmed by the relentless onward rise of heat in the ocean, which has hit extraordinary heights in recent months. “The heat has been literally off the charts, it’s been astonishing to see,” said Andrea Dutton, a geologist and climate scientist at the University of Wisconsin–Madison, who was not involved in the new research. “We can’t fully explain the temperatures we are seeing in the Atlantic, for example, which is part of the reason why hurricane season is such a concern this year. It’s quite frightening.”