Marine Heatwave Threatens UK and Irish Coasts in Unprecedented Event.

An unprecedented marine heatwave off the coasts of the UK and Ireland is posing a significant threat to marine species, with sea temperatures several degrees above normal, breaking records for late spring and early summer. The US National Oceanic and Atmospheric Administration has categorized parts of the North Sea as being in a category four marine heatwave, which is considered "extreme," with areas off the coast of England up to 5C above what is usual. The Met Office says temperatures are likely to remain high because of the emerging El Nino weather phenomenon.