Scientists have long known that marine heatwaves can be devastating for ocean ecosystems. The EU's Copernicus Climate Change Service found that this has already triggered severe marine heatwaves around Europe, with conditions only predicted to worsen in the coming months. With Super El Niño sending ocean temperatures soaring, a terrifying report warns that marine heatwaves could wreak havoc on your healthJust like those occurring over land, marine heatwaves are intense periods of above–average temperatures lasting from days to months. Most dramatically, marine heatwaves 'supercharge heat and moisture exchange between water and air'. However, the researchers also argue that marine heatwaves can have mental health impacts as well as purely physical ones.