Korea Ocean Research and Development Institute, Deep sea & marine georesource research division, Ansan P. O. Box 29, Seoul, 425-600, Korea, Republic of
Gyeongin National University of Education, Department of Science Education,San 6-8, Seoksu-Dong, Manan-Gu, Anyang, 430-040, Korea, Republic of
Korea Ocean Research and Development Institute, Deep sea & marine georesource research division, Ansan P. O. Box 29, Seoul, 425-600, Korea, Republic of