Microplastics and nanoplastics in the marine environment

Microplastics as Pollutants in the Marine Environment

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Researchers reviewed the pathways and consequences of microplastic pollution in marine environments, focusing on how post-consumer plastic waste breaks down and accumulates across ocean ecosystems. The review underscores the widespread ecological risks posed by microplastics to marine life, with potential implications for human health through seafood consumption.

The fate and impacts of microplastics in marine systems

Marine Solid Pollution—From Macroplastics to Nanoplastics

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Global plastic production has grown from under 10 million tons in the 1960s to over 300 million tons by the 2010s, driving the transition of marine pollution from visible macroplastics down to nanoscale particles that permeate every ocean environment. This trajectory underscores the urgent need for production controls and improved waste management before nanoplastic contamination becomes irreversible across marine ecosystems.

Plastics and Microplastics: Impacts in the Marine Environment

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Plastics and microplastics have achieved near-universal distribution in marine environments from surface waters to deep-sea sediments, persisting for decades while fragmenting into increasingly smaller and more biologically available particles. The growing concentration of microplastics in oceans represents a long-term threat to marine biodiversity and the food safety of seafood consumed globally.

Microplastic Fate and Impacts in the Environment

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Microplastic pollution has been documented across virtually every ecosystem on Earth, from sea surfaces to deep sediments, polar regions to tropical rivers, and inside a wide range of organisms spanning multiple trophic levels. This comprehensive environmental presence confirms that microplastics pose systemic risks to biodiversity and human health through multiple exposure pathways.