How do ocean currents and tides impact the distribution and movement of marine microplastics and nanoplastics?

Marine microplastics and nanoplastics are ubiquitous and pose a significant threat to the marine ecosystem. They can travel over great distances, disperse through the water column, and are ingested by a range of marine organisms.

The distribution and movement of these plastics in the ocean are influenced by several factors, including ocean currents and tides. Ocean currents, driven by a combination of factors, including wind, temperature, and salinity, can transport microplastics over long distances. Microplastics can become trapped in ocean eddies, which are swirling masses of water, and transported over long distances. Tides, on the other hand, can cause microplastics to move vertically through the water column, which can result in them being transported over large distances as well.

The impact of ocean currents and tides on the distribution and movement of microplastics is complex and not yet fully understood. However, research has shown that ocean currents and tides can result in the accumulation of microplastics in certain areas of the ocean, such as in gyres and along coastlines. Ocean currents and tides can also influence the vertical distribution of microplastics, which can impact their interaction with marine organisms.

Efforts to mitigate the impact of microplastics in the ocean must consider the influence of ocean currents and tides on the distribution and movement of these plastics. Better understanding of how ocean currents and tides transport microplastics can help in predicting their fate and devising effective strategies to control their spread and impact.