Gregory's Server@MatthewPCooke My hunch is PVA is minor to the plastic fibers shed by our synthetic clothes and blankets. But raising cotton and wool comes with cost also. It's tough trying to be responsible. Not having kids is probably the most eco friendly move one can make!
@rspfau perhaps very speciesist of me but they are also the main reason I try to do anything! What I have found on PVA seems to suggest it does not biodegrade too well in the sea if it gets that far. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588384/