.Science
Record hotspot found underwater - Supercritical hydrothermal vent found on Atlantic seabed.
"Scientists working in the southern Atlantic Ocean have found a 407C hydrothermal vent, the hottest yet known on an ocean floor. Although only 5C hotter than the previous deep-sea high of 402C, recorded in the Pacific Ocean, the new hotspot bumps seawater into the strange state of being a supercritical fluid."