"Tadashi Kawai is Chief researcher at the Hokkaido Research Organization, Central Fisheries Research Institution (Japan). His main research program is ""Environmental monitoring for the conservation of native ecosystems"". He received his PhD from the Kyushu University in Fukuoka, Fukuoka Prefecture, Japan. Tadashi cover biology and systematic of freshwater decapod crustacean (particularly freshwater crayfish) and conservation of wetlands on a global scale. D. Christopher Rogers is a research zoologist at the University of Kansas with the Kansas Biological Survey and is affiliated with the Biodiversity Institute, with various research projects all over the world. He received his PhD from the University of New England in Armidale, NSW, Australia. Christopher specializes in freshwater and terrestrial crustaceans (particularly Branchiopoda and Malacostraca) and the invertebrate fauna of seasonally astatic wetlands on a global scale."