Barrier Reef experiences unprecedented ocean warming

The Great Barrier Reef experienced its hottest ocean temperatures in 400 years over the past decade, threatening its survival.

Suman Naishadham reports for The Associated Press.

In short:

• Between 2016 and 2024, the Great Barrier Reef experienced mass coral bleaching due to record-high ocean temperatures, endangering its future.
• Researchers used coral skeleton samples to study sea surface temperature changes since 1618 and linked recent warming to human-caused climate change.
• Even if global warming is kept below the 1.5°C threshold of the Paris Agreement, 70% to 90% of global corals could be at risk, leading to reduced diversity.

Key quote:

“The reef is in danger and if we don’t divert from our current course, our generation will likely witness the demise of one of those great natural wonders.”

— Benjamin Henley, lecturer of sustainable urban management at the University of Melbourne

Why this matters:

The Great Barrier Reef is vital for biodiversity, seafood production and tourism. Its decline signals broader environmental impacts of climate change that threaten marine ecosystems worldwide.