Professor Hyeung-Sik Choi received a PhD in Robotics from North Carolina State University in 1993, a Master degree in Robotics from the University of South Carolina in 1990, and has been a professor in the division of Mechanical Engineering since 1993. He was member of the editing board of Int. J. of Ocean System Engineering and The Korean Society of Marine Engineering, and is now a member of the editing board of the Korean Society of Ocean Engineers. He has conducted research on the areas of the design and control of underwater robots, underwater navigation and control, high-speed underwater light communication systems, and the design and control of industrial robots. He has published about 200 papers, and presented 400 papers at conferences.