*Tomoyo Okumura1, Miho Hirai1, Takuro Nunoura1, Ken Takai1, Yasuhiko Ohara1,2 (1.Japan Agency for Marine-Earth Science and Technology, 2.Hydrographic and Oceanographic Department of Japan)
convener:Hajime Yano(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Christophe Sotin(Jet Propulsion Laboratory), Ken Takai(Extremobiosphere Research Center, Japan Agency for Marine-Earth Science & Technology), Chairperson:Hajime Yano(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Chairperson:Christophe Sotin(Jet Propulsion Laboratory)