"Unprecedented Marine Heatwave Hits North Atlantic and UK Coastlines"

The North Atlantic is experiencing an "exceptional" marine heat wave, with some areas experiencing temperatures up to 5 degrees Celsius hotter than usual. The heat wave is "totally unprecedented" and risks are high for marine species such as fish, coral, and seagrass. Rising ocean temperatures due to human-caused climate change, El Niño, weaker winds, and anti-pollution regulations are among the factors driving the extreme heat. Marine heat waves are set to become more common as climate change intensifies.