The International Coral Reef Initiative (ICRI) announced that bleaching-level heat stress has impacted more than 80% of the world's coral reefs in the fourth global coral bleaching event.

“Bleaching becomes more severe if either the heat stress episodes are more intense or if they last for a longer time,” Joerg Wiedenmann, a marine biologist who heads the Coral Reef Laboratory ...

T he Great Barrier Reef, a global treasure and the largest coral reef system on Earth, has suffered its most widespread coral bleaching event ever recorded.Spanning over 344,000 square kilometers ...

Record ocean heat has taken a devastating toll on one of the world’s greatest natural wonders, with coral bleaching on ...

The kikumeishimodoki, or zebra coral, lies about 20 meters off the coast of the Kamo district of Tsuruoka in Yamagata Prefecture, which faces the Sea of Japan. The northern limit of the reef ...

The grim milestone was recorded between January 2023 and April 2025, with the agency documenting that bleaching-level heat stress has impacted 83.7% of the world's coral reef area. The impacted ...