Ocean Darkening: A Silent Threat to Our Planet

Ocean Darkening: A Growing Threat to Marine Life and Climate Change Mexico City, June 10, 2025 – A recent video from El Heraldo de Mexico highlights a concerning environmental trend: ocean darkening. More than 20% of the world's oceans have darkened in the last 20 years, impacting marine ecosystems and potentially the planet's ability to mitigate climate change. The video cites research from the University of Plymouth showing that over 75 million square kilometers of ocean have experienced a reduction in light penetration. This 'photic zone' reduction affects over 90% of marine life, forcing them to compete for resources in shallower waters. The video explains that multiple factors contribute to this darkening, including rising sea temperatures, algal blooms, artificial light pollution, and agricultural runoff. "The ocean is changing, and with it, everything we know," states the narrator in the video, emphasizing the gravity of the situation. The consequences extend beyond marine life; the video suggests potential impacts on the air we breathe, the food we eat, and the planet's capacity to fight climate change. The video's clear presentation of scientific findings and its focus on a significant global issue make it a valuable resource for raising awareness about this critical environmental problem.