The Actual Situation About the Habitat of a Japanese Spiny Lobster Panulirus Japonicus in Fishing Port Facilities

In this paper, we paid attention to Japanese spiny lobster Panulirus japonicus which lived in the fishing port facilities, and to contribute to the development of the fishing port facilities where the function of propagation had been strengthened. Three fishing ports were selected where P. japonicus was distributed in Japan and field survey was carried out about the living density, the habitat, and catch yield from May through December, 2006. As a result, P. japonicus lived around the fishing port entrance and appeared from water depth 2m (the caisson, the armor block, and the wave dissipating concreate block) to 10m. In addition, we report it some knowledge about the appearance in fishing port according to growth stage and the methods of presuming the amount of the resource of P. japonicus.