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Scientists Invent Underwater Umbrellas to Protect Coral Reefs-and It Appears to Be Working
Gizmodo • • general
Key Points:
- Earth is currently experiencing its fourth global coral bleaching event, with projections that by 2050, most reefs will undergo mass bleaching annually due to ocean warming.
- Researchers have developed "underwater umbrellas" that shade corals to reduce solar radiation exposure, successfully decreasing bleaching and even aiding color recovery in Caribbean brain corals during a 2024 heatwave.
- The shading structures, made from pipes and nylon cloth, reduced light exposure by 60% and showed the most benefit during peak heat stress, though they were tested on small, high-priority coral areas.
- While global action to reduce greenhouse gas emissions remains essential to protect coral reefs long-term, shading offers a promising localized mitigation strategy without apparent harm to surrounding ecosystems.
- Future research aims to explore the long-term benefits of shading on coral health, including disease reduction and reproduction, and to develop scalable designs for larger reef areas.
