TCS & CSJ Joint Internatinal Conference was held at Tokyo as the 47th Annual Meeting in 2009.　It was attended by over 350 people (150 from Japan, 200 from worldwide)

International Association of Astacology & CSJ Joint International Conference on Crustacea was held at Sapporo as the 52th Annual Meeting in 2014.

 International Symposium of "Biology of the EBI (Prawn, Shrimp, and Lobster)" dedicated to Dr. KI Hayashi was held during the 54th Annual Meeting in 2016 in Kagoshima

International Symposium on Evolutionary Biology of Parasitic and Symbiotic Relationships between Molluscs and Crustaceans was held in 2017 in Wakayama during the annual meeting of Malacological Society of Japan.

International Symposium: Frontiers in Crustacean Biology: Asian Perspectives Part I was held in Chiba during the 55th Annual Meeting. 2017. 

Open International Symposium: Reproductive Biology of Barnacles in Tokyo during the 57th Annual Meeting in 2019.

International Symposium: "Symbiosis and Parasitism in Crustacea: Diversity and Ecological Studies in Asian Region" was held GIS NTU Convention Center, Taipei, Taiwan, in 2019 during Asian Marine Biology Symposium

International Symposium: Frontiers in Crustacean Biology: Asian Perspectives Part II was held in Taiwan during TCS Mid-year Meeting in 2019 in the Henry Cheng International Conference Centre, The Chinese University of Hong Kong.