S5·E99 Heatwave: the effect on the seas

Europe is going through a historic heatwave on land, but also at sea, with temperatures 2 to 5 degrees above average: these days, 20°C has been recorded in the English Channel off Dunkirk, 23°C in the Bay of Biscay; 19°C in Lübeck, on the Baltic; between 25 and 27°C in Nice… An overheating of the seas and oceans with serious consequences.