“…Microplastics in the water and sediment of the Delaware River measure an average of 0.19-7.5 particles per cubic meter and 405 particles per kilogram of dry weight, respectively (Baldwin et al, 2021;Cohen et al, 2019). Norfolk Canyon has origins from erosional processes but could still be influenced by river input of the debris in the nearby area of Baltimore Canyon (CSA et al, 2017).…”