On March 2, 1998, a human skull has been found from a trolley-net of a fishing boat, on the coastal waters of Japan, in a 27.3 nautical miles from Inubosaki Lighthouse (Fig. 9). The skull was send to us from Japanese Coastguard Choshi Division, to be checked against the data of a specific person, who has been claimed "missing" for a month. Compared between the skull with the dental and the dental ante-mortem X-ray films and records supplied by the dentist of the person, we have found many identical points between the two, especially in regard to the X-ray findings, finally the skull turned out to be the missing person(Fig. 10-13)