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More than 80% of the world’s reefs hit by bleaching after worst global event on record

An ashen pallor and an eerie stillness all that remains where there should fluttering fish and vibrant colours in the reefscape, one conservationist says The world’s coral reefs have been pushed into “uncharted territory” by the worst global bleaching event on record that has now hit more than 80% of the planet’s reefs, scientists have warned. Reefs in at least 82 countries and territories have been exposed to enough heat to turn corals white since the global event started in January 2023, the latest data from the US government’s Coral Reef Watch shows. Continue reading...

More than 80% of the world’s reefs hit by bleaching after worst global event on record
More than 80% of the world’s reefs hit by bleaching after worst global event on record

Image Source : https://www.theguardian.com/environment/2025/apr/23/coral-reef-bleaching-worst-… , Used Under : CC BY 4.0

The global bleaching event affecting coral reefs worldwide is a cause for alarm as it has reached unprecedented levels. The high ocean temperatures have caused widespread damage and death to corals, impacting the biodiversity and ecosystem of the oceans. Scientists have observed bleaching in reefs across the Pacific, Atlantic, and Indian oceans, with even supposed refuges like Raja Ampat and the Gulf of Eilat being affected. The ongoing bleaching event has surpassed previous events in terms of the percentage of reefs impacted, with even back-to-back bleaching occurring in some areas. The devastation caused by the bleaching event has led to ecological grief among scientists and researchers who have spent their lives studying and protecting coral reefs. The loss of reef-building corals, such as elkhorns, is particularly concerning as they play a crucial role in supporting marine life and protecting coastlines. Efforts to reduce fossil fuels and invest in clean energy are seen as crucial to addressing the root cause of rising ocean temperatures and the bleaching of coral reefs. World leaders are urged to take action to mitigate the effects of climate change on coral reefs and other ecosystems before it is too late.

Author Name: Graham Readfearn

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