Coral reefs, although covering less than 1% of the ocean floor, host a quarter of all marine life. Bleaching occurs when corals, under the pressure of high temperatures, expel the symbiotic algae that provide them with food and color, leaving them vulnerable to death. Scientists warn that the frequency and intensity of these phenomena make ecosystem recovery nearly impossible without a drastic reduction in greenhouse gas emissions.

This ecological crisis has a direct impact not only on marine biodiversity but also on the economies and security of millions of people who rely on reefs for food and protection from storms. The need for global mobilization is imperative, as the rate of warming in tropical seas exceeds every previous predictive model.

The film serves as a powerful reminder that behind the numbers and percentages of coral bleaching are people, traditions, and an entire planet at risk. The EcoFrames Festival seeks, through such screenings, to transform scientific information into an experience, encouraging dialogue and action.

Cinema has the power to make us see what often remains invisible beneath the surface of the ocean. The case of coral reefs is a cry of agony from nature that we can no longer ignore. Through art and information, we can claim a future where tomorrow will not be a whisper of threat, but a promise of life.

Additional Context

The international research effort led to estimates that while over 50% of the world's coral reefs suffered significant bleaching between 2014 and 2017, approximately 15% of those reefs experienced notable mortality. Data indicates that 80% of reefs showed at least moderate levels of bleaching during this period. This climate catastrophe is considered the worst coral bleaching event ever recorded.

Scientists emphasize that these events threaten essential services provided by reefs, including tourism and food supply for millions of people. Beyond rising temperatures, reefs face additional pressure from ocean acidification, which decreases calcification rates and increases dissolution rates, and more frequent storms that can physically destroy reef structures.

Global scientific consensus suggests that most coral reefs will perish if global warming reaches 1.5 degrees Celsius above preindustrial levels. This threshold is the long-term limit that countries committed to pursuing under the 2015 Paris climate accord. Researchers are currently analyzing the ramifications of the 2014-2017 heatwave as evidence suggests another possible mass bleaching event may already be underway.

Source: phys.org