Japan dominated the world's cultured pearl industry as the suzerain state for a long time. However, the scheme has been collapsing in these days. Though the rapid globalization of the pearl industry can be considered as one of the reasons for that, the most dominant causes are the deterioration of the pearl farm environment caused by the occurrence of harmful red tide and massive mortality of Akoya pearl oysters due to infectious disease. Such a phenomenon is referred not only to pearl culture but also to BSE, carp herpes, avian influenza, etc. These phenomena may seem to be the retribution of not treating animals as living creature for the pursuit of economic efficiency and of incessant change of the natural environment for production increase.
Selected Papers No.6(p.19)

A floating structure is viewed as a "moored vessel" by the Maritime Bureau of the Ministry of Land, Infrastructure and Transport (MLIT) in Japan from the viewpoint of vessels, while it is viewed as a "facility of a port" by the Ports and Harbors Bureau, and as a "marine structure" by the Housing Bureau of MLIT, noting its similarities in usage with a structure on land. That is to say, for the safety of the structure, application of the Law for Safety of Vessels, the Port Act and the Building Standard Law (including the Fire Service Law) are required under each system of law, respectively. However, the present two cases are exempt from the application of these laws. It is hoped that various systems of laws and regulations would be a chance rather than an obstacle, for the facilitation of new and positive utilization of sea areas in the future.

Oil and gas development projects in Sakhalin Island are being performed. However, are analyses of the damage risks and anti-disaster measures for the occurrence of oil spill accidents being sufficiently performed? Development of energy resources in the sea around Hokkaido is an enterprise promising for Japan's economy and energy security in the future, however, there is concern about the progress of the development with lack of consideration for the rich national environment.