The East Anglian coast is bracing for severe conditions as a 'category two' marine heatwave grips the region. Sea temperatures have soared between 1.5C and 4C above their seasonal average, with the Met Office warning of "widespread strong to locally severe" conditions.
This intense heatwave follows on from a recent 'heat dome', causing rapid development of marine heatwaves across wider UK waters, according to Dr Ségolène Berthou, an air-sea interaction specialist at the Met Office. She noted that this is the most intense event observed so far this year.
Marine experts are sounding alarm bells over the impact on ecosystems and wildlife. Professor John Pinnegar, principal scientist at the Centre for Environment, Fisheries and Aquaculture Science, highlighted the "significant impacts" marine heatwaves can have, including mass mortality events and disruptions to fish populations, which could lead to food chain changes.
The Met Office suggests this heatwave may not reach peak temperatures seen in late June, when some areas hit a scorching 37.7C, but its prolonged nature poses concerns. Clare Brook, CEO of the Blue Marine Foundation, underlined the critical role of the ocean as the world's largest carbon sink and oxygen provider, stressing that human life would be impossible without it.
While the most severe conditions are centred off the East Coast of England, other UK waters – including Scotland, Wales, and Northern Ireland – face "widespread strong to locally severe" marine heatwave conditions. The Met Office has not detailed specific temperature anomalies for these regions in its latest warning, but experts urge caution and conservation efforts.