2. Development of Underwater Cable Observation Systems 2005 Sep.2005: Participation in OCEANS´ 2005 America in Washington DC and exchange information about Underwater Cable Observation Systems Feb.2006: Participation in SSC Workshop in Dublin and exchange information and draw up standardization of underwater platform connected with underwater cables ARENA: Submarine Cabled Seafloor Observatory Project in Japan JAMSTEC Cabled Observatory Off Hatsushima JAMSTEC Seismometer Integrated into Submarine Cable JAMSTEC Seafloor Node for Real Time Mobile System Constructed by ROV JAMSTEC Docking of Real Time Mobile System to Backbone Submarine Cable JAMSTEC