Abstract
In this study, the thoughts of fishermen about the physical environment of the Ariake Sea were summarized using the results of a hearing survey in 2006, and these were compared with the latest scientific findings to determine the amount of correlation between the fishermen's reports and the latest scientific findings. Due to the fact that the period after the Isahaya reclamation works were completed occurred during the peak of the ascending node motion of the moon, and that a rise in the sea level at the scale of the Pacific Ocean occurred in the same period, these changes were easily mistaken to be the effect of completion of the Isahaya reclamation works. Therefore, many things can be explained scientifically by rephrasing "the effect of closing" in the verbal survey with "the period of closing."