Fig. 1: SEM images of microplastics before and after biofilm colonisation.
From: Non-buoyant microplastic settling velocity varies with biofilm growth and ambient water salinity
a Clean polyethylene terephthalate (PET), b biofilmed PET, c clean nylon, polyester and acrylic (NP&A) fibres and d biofilmed NP&A fibres. Note the scale in b is different than in a, c, d due to the higher magnification needed to visualise the biofilmed PET.
