Plastic pollution is a pressing issue that is impacting coastlines across the globe. A recent study conducted by the University of Portsmouth, utilizing data from the Big Microplastic Survey, has shed light on the regional disparities in the types and concentrations of plastic found in coastal areas.
The study, which was published in Environmental Monitoring and Assessment, analyzed data from 1,089 surveys conducted by volunteers in 39 countries between 2018 and 2024. Nearly 59,000 pieces of plastic were examined to map out the global patterns of coastal pollution.
Lead author Dr. David Jones emphasized that plastic pollution is not just a local problem, but a global crisis with different regions facing unique challenges. The research revealed that nurdles, pre-production plastic pellets, were the most commonly recorded type of plastic. The Netherlands reported the highest counts of nurdles, with levels 14 times greater than the next worst-affected country, largely due to a shipping container disaster. Bio-beads, commonly used in wastewater treatment, were heavily concentrated in the Netherlands and Honduras, with Britain ranking third in average counts per sample.
On the other hand, secondary plastics, fragments that break down from larger items, were more prevalent in Kenya and Honduras. Expanded polystyrene was particularly common in Thailand, Indonesia, and Portugal. White plastics were the most dominant across all countries, followed by clear or opaque, blue, and green plastics.
The study also highlighted the power of citizen science in gathering data on a global scale. Over 1,000 volunteers from 66 countries registered to participate in the Big Microplastic Survey, with the highest numbers coming from Britain, the United States, and Australia. However, only a fraction of registrants actually submitted data, underscoring the challenges of sustaining volunteer engagement.
Successful projects were often driven by non-governmental organizations, which proved to be the most effective contributors and conducted the majority of surveys within their respective regions. This study underscores the importance of collaboration and community involvement in addressing the urgent issue of plastic pollution in our oceans.
