- Obtain a database on morphology, distribution, genetic bar code of jelly (Hydrozoa) in coastal waters of Vietnam.
- Idebtify the diversiity and some ecological characteristics, as well as the harmful effects of some quatic jellyfish species Hydrozoa in coastal areas of Vietnam to serve the exploitation and rational use of resoirces.

This mission has promoted cooperation and research development between the Institute of Marine Environment and Resources (IMER/VAST) and its main partner, Tokai University, in addition to strengthening cooperation with Hiroshima University, and the University of Tokyo. Kyushu University, and the Japan Agency for Ocean-Earth Science and Technology (JAMSTEC).
Through this mission, the set objectives have been achieved:
- Assess the diversity and some ecological characteristics, as well as the harmful effects of some species of water jellyfish (Hydrozoa) in the coastal area of Khanh Hoa for the exploitation and rational use of resources.
- Get the original database on morphology, distribution, genetic bar code of Jellyfish (Hydrozoa) ...etc. in the coastal waters of Nha Trang-Khanh Hoa, Vietnam.
In which, the current status and changes in environmental characteristics were evaluated, as well as the aquatic jellyfish (Hydrozoa) communities were studied for morphological diversity, genetic diversity, and community variability. spatial analysis and initial assessment of the relationship between the aquatic jellyfish community (Hydrozoa) and environmental factors in the studied area.
Both sides have jointly published in journals in each country and abroad, not only encapsulating this task, both sides have jointly connected and published articles in other research areas and regions. At the end of this task, 02 domestic articles and 03 ISI articles have been published. The long-term and short-term goals for the duration of the mission have been completed.

- Publications: 02 domestic articles and 3 articles in SCIE journals
Works published in domestic journals
1. Tran Manh Ha, Pham The Thu, Jun Nishikawa, 2020. Records of Versuriga anadyomene and Cassiopea andromeda (Scyphozoa, Rhizostomeae) in the coastal waters of Vietnam. Vietnam Journal of Marine Science and Technology; Vol. 20, No. 3; 2020:
277–284.
2. Phạm Thị Kha, Cao Thị Thu Trang, Nguyễn Văn Quân, Trần Mạnh Hà, Lê Văn Nam, 2021. Diễn biến chất lượng nước vịnh Nha Trang giai đoạn 2017-2020. Kỷ yếu Hội thảo Khoa học địa lý nhân văn với việc thực hiện chiến lược phát triển bền vững kinh tế biển.
tr3 74-382.
Work published in SCIE journals
1. Susumu Ohtsuka, Tran Manh Ha and Pham The Thu, 2020. A new species of Paramacrochiron (Copepoda, Cyclopoida) parasitic on the Rhizostome medusa Versuriga anadyoneme (Maas, 1903) collected from Vietnam. Crustaceana 93 (1) 111-123.
2. Akane Iida, Dhugal J. Lindsay, Tran Manh Ha, Pham The Thu, Mitsuko Hidaka, ShoToshino, Yusuke Kondo, Susumu Ohtsuka & Jun Nishikawa, 2021. Morphological and molecular analyses of Blackfordia sp. (Hydrozoa: Leptothecata) newly discovered in
Vietnam. Plankton Benthos Res 16(2): 118–128.
3. Akane Iida*, Kenji Nohara, Fatimah Md. Yusoff, Khwanruan Srinui, Tran Manh Ha, Susumu Ohtsuka, Ephrime B. Metillo, Honorio B. Pagliawan, Jun Nishikawa, 2021.
64 Genetic diversities of commercially harvested jellyfish, Rhopilema hispidum and Lobonemoides robustus, in Southeast Asia. Plankton and benthos Research 16(4): 1–10.
- Other products: 01 bachelor and 01 doctor