AI Insight
Rising ocean temperatures caused by climate change are damaging coral reefs by causing bleaching events that turn corals white and lead to their death. Although coral reef restoration is technically possible, it remains challenging, costly, and leaves restored corals susceptible to subsequent heat waves. Researchers are investigating protective methods, including underwater shade structures, to prevent or reduce heat-related damage to existing coral reefs.
Why it matters
Coral reefs support approximately 25% of marine biodiversity and provide critical ecosystem services including coastal protection and fisheries support. Developing cost-effective protection strategies for existing reefs could be more practical than large-scale restoration efforts, potentially preserving these vital ecosystems during increasingly frequent marine heat waves.
Understand the Science
High sea temperatures driven by the climate crisis damage corals, bleaching them ghostly white and killing them. While restoration of dead reefs is possible, it’s difficult and expensive, and restored corals are vulnerable to future heat waves. Finding ways to stop or slow the damage to existing reefs is crucial.
Source: Underwater umbrellas for coral reefs could help protect against heat damage