*Lena Murata¹, Natsumi Nakano¹, Tadashi Yoshizawa¹, Ayumi Yoshimatsu¹, Kae Takahashi¹, Marianne Conin², Patrick Fulton³, Jamie Kirkpatrick⁴, Shuichi Kodaira¹, Christine Regalla⁵, Kohtaro Ujiie⁶, Nobuhisa Eguchi¹, Lena Maeda¹, Natsumi Okutsu¹, Sean Toczko¹, the Expedition 405 Science Party and Outreach Officers (1.Japan Agency for Marine-Earth Science and Technology, 2.University of Lorraine, 3.Cornell University USA, 4.University of Nevada, Reno, 5.Northern Arizona University, 6.University of Tsukuba)