Katsuyuki Hamasaki is a Professor, Tokyo University of Marine Science and Technology (TUMSAT), Japan. His research field is marine bioscience. Professor Hamasaki has actively participated in academic work. He has published numerous journal articles and book chapters on topics such as Flocculation of Artemia induced by East Asian common octopus Octopus sinensis paralarvae under culture condition, Sexual Dimorphism and Reproductive Status of the Red Swamp Crayfish Procambarus clarkii, and Occurrence and distribution of early juvenile land hermit crabs at a small beach on the Boso Peninsula.Dr. Hamasaki received a Ph.D in Aquaculture at Kyushu University, Japan.