This film discusses the evolutionary significance of segmented worms, particularly earthworms, within the phylum Annelida. It explains the structure and function of their segmented bodies, including ...

Red circles in (A) and (B) show the location of the Yoro tidal flat. The dashed ellipse in (C) shows the sampling area, from where the fecal pellets of Marphysa sp. E were collected; reduced mud (RM) ...