The Great Pacific Garbage Patch Is Changing the Color of the Ocean

An anonymous reader has reported from Scientific American that the Great Pacific Garbage Patch, a region in the Pacific Ocean where debris naturally accumulates, appears to be altering the ocean's color. This change is believed to be a result of the vast amount of tiny plastic particles found within the patch. Daniel Koestner, a postdoctoral fellow at the University of Bergen in Norway, and his team analyzed 20 years of satellite data focusing on the area with the highest concentration of plastic in the ocean.

Their findings, published in the journal Communications Earth & Environment, indicate that waters near the garbage patch have become brighter in both blue and green wavelengths compared to surrounding areas over the past two decades. While the researchers do not definitively prove that microplastics are directly responsible for this color change, their study is supported by laboratory experiments using microplastics.

However, without direct ocean samples, it remains challenging to pinpoint the exact cause of the color shift. Co-author Shea Cheatham, a Ph.D. student at the same university, acknowledges that further investigation is needed to confirm the link between microplastics and the ocean's color change. The researchers hope that detecting these color variations could help identify other global locations where microplastics have accumulated.