Papers

A growing plastic smog, now estimated to be over 170 trillion plastic particles afloat in the world’s oceans—Urgent solutions required

Researchers analyzed ocean plastic data from over 11,000 sampling stations worldwide spanning 1979 to 2019. They estimated that approximately 82 to 358 trillion plastic particles are now floating in the world's oceans, and found a rapid acceleration in plastic pollution since 2005. The study underscores the urgent need for international policy interventions, as current levels suggest existing efforts have not been sufficient to slow the growing plastic burden.

Microplastic pollution in the water column and benthic sediment of the San Pedro Bay, California, USA

This study conducted one of the first comprehensive surveys of microplastic distribution throughout the entire water column and seafloor sediment in San Pedro Bay, California. Researchers found that microplastic concentrations were significantly higher in nearshore waters than offshore, and that fibers were the most common particle type, providing important baseline data for understanding coastal microplastic pollution.

Current State of Microplastic Pollution Research Data: Trends in Availability and Sources of Open Data

Researchers analyzed data sharing practices in the microplastics research community and found that less than a third of published articles included a data sharing statement. Of the datasets found in online repositories, most were provided as supplementary material rather than in dedicated data repositories, suggesting that the rate of open data sharing lags behind the rapid growth in microplastics publications.

Toward the Integrated Marine Debris Observing System

Researchers proposed a framework for an integrated marine debris observing system that would combine remote sensing, in situ measurements, and computer modeling to monitor plastic pollution globally. The study outlines how optical sensors, satellite imagery, and citizen science programs could work together to track debris sources, pathways, and accumulation patterns. The system aims to support policy decisions and operational cleanup efforts by providing reliable long-term data on the state of ocean plastic pollution.

Plastic Pollution in the World's Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea

Researchers conducted the first global estimate of floating plastic debris in the oceans, finding more than 5 trillion pieces weighing over 250,000 tonnes at the sea surface, establishing a widely cited baseline for understanding the scale of ocean plastic pollution.

The Mediterranean Plastic Soup: synthetic polymers in Mediterranean surface waters

Researchers collected surface water samples from across the Mediterranean Sea and identified the types and abundance of floating plastic polymers, finding that this semi-enclosed sea has accumulated substantial plastic debris.

Spatial distribution of microplastics in a coastal upwelling region: Offshore dispersal from urban sources in the Humboldt Current System

This study examined the spatial distribution of microplastics in coastal waters of the Humboldt Current System along the Chilean coast, finding that offshore transport driven by upwelling dispersed microplastics away from urban sources. The results suggest that Eastern Boundary Upwelling Systems play a distinct role in distributing coastal microplastic pollution.

Community Science‐Informed Local Policy: A Case Study in Pinole Creek Litter Assessment

A community science project in Pinole, California surveyed trash in a local creek and found an estimated 47,820 pieces, with plastic and single-use items being the most common. The findings led to seven policy recommendations being presented to the city council, which voted to discuss new ordinances. This study shows how everyday plastic waste ends up in waterways, contributing to the broader microplastic pollution problem.

Quantitative Analysis of Microplastics on Texas Beaches

Researchers surveyed microplastic abundance at three Texas beach sites—Galveston Island, Mustang Island, and Sea Rim—to investigate why Texas coastlines accumulate marine debris at rates ten times higher than comparable Gulf of Mexico shores. The study quantified and characterized microplastics in beach sediments across sites and sampling periods. Findings contribute to understanding the drivers of disproportionate plastic pollution accumulation on Texas beaches.

Floating Microplastics in the South Adriatic Sea