New research from CSIRO, Australia’s national science agency, and the University of Toronto in Canada, reveals startling figures about plastic pollution in the ocean. The study estimates that up to 11 million tonnes of plastic waste lie on the ocean floor, serving as a resting place or reservoir for marine debris.
Led by Dr. Denise Hardesty from CSIRO and Ms. Alice Zhu from the University of Toronto, the research marks the first attempt to quantify the extent of plastic pollution on the ocean floor. Using data from remote operated vehicles (ROVs) and bottom trawls, the study predicts that the majority of plastic mass clusters around continents, with approximately half residing above 200 meters depth.
Ms. Zhu emphasizes that the estimated amount of plastic on the ocean floor could be up to 100 times more than what floats on the ocean’s surface. The findings underscore the urgent need for action to curb plastic pollution and protect marine ecosystems. With plastic use projected to double by 2040, understanding the behavior of plastic in the marine environment is crucial for implementing effective source reduction and environmental remediation efforts.
The study fills a longstanding knowledge gap and highlights the importance of addressing plastic pollution to safeguard marine life and preserve the health of our oceans.
