World's oceans hit highest temperature on record as El Niño grows

# Why This Matters Record ocean temperatures represent a critical threshold with immediate consequences for global food security and coastal economies. The combination of long-term climate warming and El Niño's cyclical heat amplification is already triggering mass coral bleaching, disrupting fish migration patterns that millions depend on for protein, and accelerating sea level rise that threatens island nations and major port cities. These aren't distant future concerns—fisheries from Southeast Asia to West Africa are reporting declining catches this year, and insurance markets are repricing coastal property risk upward in real time. Without rapid emissions reductions, we're likely entering a decade where ocean-dependent economies face cascading disruptions simultaneously: degraded fisheries, damaged tourism infrastructure, and compounding weather extremes that strain disaster response systems already stretched thin.