Jellyfish Identification on-line workshop was held on 17-18 March, 2022, collaboratd with IOC/WESTPAC. Coordinators were Prof. Aileen Tan Shau Hwai, Univ. Sains Malaysia and Prof. Hiroshi Miyake, Kitasato Univ. More than 60 trainees gathered from 9 countries/region (Indonesia, Japan, Malaysia, Philippines, Singapore, Sri Lanka, Taiwan, Thailand, Vietnam) and received lectures. Photo below is a shot at identification ws. High quality video images helped trainees to learn the characteristics of jellyfish.