Abstract / Introduction / Summary:
Distribution of Cerithioidea species was surveyed at Kiire tidal flat. Batillaria multiformis, Pirenella nipponica and Cerithium coralium were dominant in this tidal flat. They are detritus feeder, that forages sediment and digest organic material on or in the sediment. In this process, they contribute decomposition in the coastal ecosystem. Seasonal change of size distribution of C. coralium was also surveyed.
