The number of total microplastics varied from 2.1 to 10.5 items/g
(wet weight) and from 4.3 to 57.2 items/individual for bivalves
(Fig. 3). Sc. subcrenata contained an average of 10.5 items/g and
showed the highest levels of microplastic contamination by weight
(Fig. 3A). Patinopecten yessoensis showed the highest microplastics
(57.2 items/individual) by the individual