*Yuning Zeng¹, Yusuke Yokoyama¹, Shoko Hirabayashi¹, Yosuke Miyairi¹, Atsushi Suzuki³, Takahiro AZE¹, Yuta Kawakubo² (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 3.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST))

*Mariko Iijima¹, Ko Yasumoto², Jun Yasumoto³, Akira Iguchi¹, Mina Hirose⁴, Atsushi Suzuki¹, Shugo Watabe² (1.National Institute of Advanced Industrial Science and Technology, 2.School of Marine Biosciences, Kitasato University, 3.Faculty of Agriculture, University of the Ryukyus, 4.Tropical Technology Plus)

*Tatsuo Fukuhara¹, Yuya Yamamoto¹, Shunsuke Kondo¹, Minako Tanaka¹, Takanori Sugiyama¹, Yosuke Onishi¹, Yumi Komatsubara², Tomomi Eriguchi², Tetsuya Miwa³, Kyoko Yamaoka⁴, Akira Iguchi⁴, Atsushi Suzuki⁴, Akiyuki Ishida⁵, Saeko Nojiri⁵ (1.KANSO TECHNOS Co., Ltd., 2.Science and Technology Co., Ltd., 3.Japan Agency for Marine-Earth Science and Technology, 4.The National Institute of Advanced Industrial Science and Technology, 5.Japan Organization for Metals and Energy Security)

*Ayumi Maeda^1,2, Miyuki Nishijima², Akira Iguchi², Atsushi Suzuki², Shunsuke Kondo³, Hiroko Kamoshida⁴ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Geological Survey of Japan, 3.KANSO TECHNOS CO. LTD., 4.Japan Organization for Metals and Energy Security (JOGMEC))

*Yuri Hashimoto¹, Azumi Kuroyanagi², Atsushi Suzuki³, Kyoko Yamaoka³, Takeshi Fujii⁴, Shunsuke Kondo⁴, Hiroko Kamoshida⁵ (1.Tohoku Univ., 2.Tohoku University Museum, 3.AIST, 4.KANSO, 5.JOGMEC)

*Ai Genda¹, Kyoko Yamaoka¹, Yuki Ota¹, Ayumi Tsukasaki¹, Yusuke Miyajima¹, Hideyoshi Yoshioka¹, Atsushi Suzuki¹, Masahiro Suzumura¹ (1.National Institute of Advanced Industrial Science and Technology)

*HIROSHI ISHIDA¹, Masahiro Suzumura², Aumi Tsukasaki², Masayuki Nagao³, Atsushi Suzuki³, Takeshi Yoshida⁴, Mitsuhiro Ishii⁵, Kota Suzuki⁵, Takao Shima¹, Toshio Ogura⁶ (1.The Marine Ecology Research Institute , 2.Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology, 3.Research Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 4.Chiba Prefectural Environmental Research Center, 5.Chiba Prefectural Fisheries Research Center, 6.Fisheries Cooperative Association of Kujukuri)

*Naoki Saito^1,2, Shinichiro Yano², Masayuki Nagao¹, Atsushi Suzuki¹, Hiroko Kamoshida³ (1.National Institute of Advanced Industrial Science and Technology, 2.Kyushu University, 3.Japan Organization for Metals and Energy Security)

Hiroko Kamoshida¹, Shogo Kato², Hiroyuki Yokooka², Keigo Yanagita³, Shohei Kikuta³, Shota Mitsui⁴, Jumpei Minatoya⁴, Akira Iguchi^5,6, Hiroki Kise⁷, *Atsushi Suzuki^5,6 (1. Japan Organization for Metals and Energy Security (JOGMEC), 2.IDEA Consultants, Inc., 3.Science and Technology Co., Ltd., 4.Marine Biological Research Institute of Japan Co., Ltd., 5.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 6.Research Laboratory on Environmentally-conscious Developments and Technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), 7.Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST))

*Akinori Teramura¹, Naoki Saito¹, Hiroki Kise¹, Miyuki Nishijima¹, Shunsuke Kondo², Tomo Kitahashi², Yuya Yamamoto², Atsushi Suzuki¹, Akira Iguchi¹ (1.National Institute of Advanced Industrial Science and Technology, 2.KANSO TECHNOS CO., LTD.)

*Kyoko Yamaoka¹, Travis Washburn¹, Akira Iguchi¹, Atsushi Suzuki¹, Tetsuhiro Ishitani², Chisato Murakami³, Akira Tsune³ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Marine Biological Research Institute of Japan Co.,Ltd., 3.Deep Ocean Resources Development Co.,Ltd.)

*Tomo Kitahashi¹, Miyuki Nishijima², Akira Iguchi², Shunsuke Kondo¹, Atsushi Suzuki² (1. KANSO TECHNOS Co., Ltd., 2.National Institute of Advanced Industrial Science and Technology)