Julien Richirt^1,2, Okada Satoshi¹, Yoshiyuki Ishitani¹, Katsuyuki Uematsu³, Akihiro Tame^3,5, Kaya Oda¹, Noriyuki Isobe¹, Toyoho Ishimura⁴, Masashi Tsuchiya¹, *Hidetaka Nomaki¹ (1.JAMSTEC, 2.University of Lille, 3.Marine Works Japan Ltd, 4.Kyoto University, 5.University of Fukui)

*Rie Hori, S.¹, Teams of Living Radiolarian study (Ehime University)² (1.Department of Earth Science, Faculty of Science, Ehime University, 2.Geology course, Faculty of Science, Ehime University)

*Haruka TAKAGI¹, Shin SEKINE² (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Graduate School of Science and Engineering, Chiba University)

*Ayumi Maeda^1,2, Kohei Hamamoto^3,2, Miyuki Nishijima², Akira Iguchi², Atsushi Suzuki² (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Geological Survey of Japan, 3.Ehime University, Center for Marine Environmental Studies)

*Yoshiyuki Ishitani¹, Okada Satoshi¹, Maki Kayamori², Hidetaka Nomaki¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Inagaki Yuka¹, Yurika Ujiie², Yoshiyuki Ishitani³, Caterina Ciacci⁴, Fabrizio Frontalini⁵, Federica Rebecchi⁵, Mattia Tiboni⁴ (1.Kochi University, Graduate School of Integrated Arts and Sciences, Science Program, Biological Science Course, 2. Marine Core Research Institute, Kochi University , 3.Japan Agency for Marine-Earth Science and Technology, 4.University of Urbino, Department of Biomolecular Science, 5.University of Urbino, Department of Pure and Applied Sciences)