CLiP South Africa Microplastics in the Port of Durban 2019 dataset https://portal.medin.org.uk/portal/start.php?tpc=009_CEFAS9ff912ca-e2e8-4294-9178-a5707aceca66 This dataset contains two csv files. The first one (South_Africa_Port_Durban_Microplastics.csv) reports the results of the study carried out in the Port of Durban in 2019. The file contains water measurement from CTD casts, microplastic abundance in water sampled by microplastic pump, microplastic abundance in sediment and particulate size analysis (PSA) results from Van Veen grab samples. GPS coordinates and time of deployment are reported for each measurement. CTD measured temperature, salinity and turbulence of the water. For microplastic pump casts, the amount of water filtered, the size of the four sieves used and the number of particles found on each filter are reported. Data from the grabs include PSA results and the number of particles found in the replicates (5g each) from each grab with lab blank values. A series of atmospheric blanks was also obtained leaving a jar open during sampling operation and microplastics abundances are reported. The csv second file (South_Africa_Port_Durban_Microplastics_FTIR) contains the profiles of the ATR-FT-IR spectrum analysis of plastic pieces found in the water samples. A .zip folder contains additional 18 FTIR profiles from water samples for which only a .tif image is available. A README text file contains the legend of the columns of the two csv files. 20200514 20200421