Jeong-Yeob Chae, Inha University, Department of Marine Science and Biological Engineering, Incheon, South Korea, Chanhyung Jeon, Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, United States, Pyeongjoong Kim, UST21 Corp., South Korea, Naoki Hirose, Kyushu University, Research Institute for Applied Mechanics, Fukuoka, Japan and Jae-Hun Park, Inha University, Department of Ocean Sciences, Incheon, South Korea