Hope for coral reefs: Scientists find 166,000 sq km resilient to climate change

Coral reefs, often called the "rainforests of the oceans," support about one-third of all marine species and sustain roughly a billion people. However, record ocean temperatures and other climate change impacts, such as pollution and frequent bleaching events, have led to widespread coral death.

Despite the dire situation, a new study offers a glimmer of hope. Researchers have identified nearly 166,000 square kilometers of coral reefs with the potential to survive and recover under climate change conditions. This area is three times larger than previously estimated, suggesting that not all reefs are equally threatened.

The analysis, which reviewed 45,000 studies and long-term climate and ocean data, pinpointed climate-resilient reefs in 71 countries and 100 territories. Notably, some of these resilient areas, including parts of the Caribbean and the Pacific and Atlantic Oceans, were not previously recognized for their resistance.

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Coral reefs are often presented as ecosystems that cannot be saved. This study shows the opposite. We know where the hope is, and now we need the political will.

Emily Darling, a coral conservation director at the Wildlife Conservation Society and a co-author of the study, emphasized that these findings shift the perspective on coral reef futures. "Coral reefs are often presented as ecosystems that cannot be saved," she stated. "This study shows the opposite. We know where the hope is, and now we need the political will."

Darling believes the new data can guide governments in planning conservation actions, especially as nations work towards the "30 by 30" goal of protecting 30% of their land and marine areas by the end of the decade. Currently, only 28% of the identified resilient reefs are within protected areas, presenting both a significant opportunity and an urgent call to action, particularly with the looming threat of a strong El Niño.

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Only 28 percent of these reefs are currently in protected and conserved areas, so the opportunity is obvious, as is the urgency, especially as we face an upcoming super El Niño.