his paper analyses the ecological characters of the food zooplankton in the frontal eddyregion of the Kuroshio using the plankton samples collected from the Kuroshio and its adja-cent waters in the North East China Sea in April 1989. The results are as follows :1. 162 zooplankton species were recorded with an average biomass of 48. 8mg/m￣3 in thewarm water tongue area of the frontal eddy region. The trends of the distribution of thewarm water species, the warm temperate neritic species and the deep-water sp...