You probably mean nanoplastics. To be fair, I think almost every article that mentions microplastics mean nanoplastics. Microplastics seem to be defined in the

You probably mean nanoplastics. To be fair, I think almost every article that mentions microplastics mean nanoplastics. Microplastics seem to be defined in the milimetre range, so they should be well visible. https://thisvsthat.io/microplastics-vs-nanoplastics https://thisvsthat.io/microplastics-vs-nanoplastics