Figure 3: Filter images from processed sediment sample number 805.

(A) white light, showing a variety of extracted debris; (B) Autostitch reconstruction of the 54 tiled images taken using a blue light and orange filter, (C) expansion showing three bright spots of fluorescently-tagged microplastics and (D) close-up of one larger particle, approximately 100 μm across. A number of bright spots much smaller than this are also clearly visible in image (C).