Global oceans darkening, threatening marine life: Study
A new study from the University of Plymouth found that more than a fifth of our oceans have gotten noticeably darker since 2003. This is mostly because the "photic zone"—the sunlit layer where marine life thrives—has shrunk, making it harder for underwater plants and animals to survive.
Nearly 9% of ocean areas lost over 50 meters of light
Researchers say nearly 9% of ocean areas lost over 50 meters of this light-filled zone in just two decades. As Dr. Thomas Davies explains, less sunlight means less photosynthesis, which can seriously shake up food webs and make it tough for many species to get by. The changes are especially noticeable in places like the Arctic and North Sea, with pollution and warmer waters making things worse. The team warns that if this trend continues, it could threaten everything from marine biodiversity to how our planet regulates climate.