Natural Ocean Protection Won't Save the Great Barrier Reef From Annual Bleaching

Tulane University modeling published in January 2026 projects the Great Barrier Reef will bleach nearly every year, even when accounting for natural buffers like cloud cover and cooler upwelling currents. These mechanisms—long considered partial mitigants—prove insufficient at current warming rates. Near-annual bleaching eliminates the recovery periods coral ecosystems need to regenerate, pushing cumulative mortality upward toward the 7.9% threshold beyond which reef structures degrade irreversibly.