Micro/nano-plastic marine pollution constitutes a major environmental challenge and reliable data continues to be scarce. During the navigation, some other samples of water will be collected to assess their plastic content. Plastic particles will be classified using the new Hartmann et al. method (link) that harmonizes the numerous existing classifications. The data will then be correlated to other relevant parameters (e.g. geographical location of the sampling point, meteorological data, ocean currents, etc.).