Abstract
Some notes on five common zooplankters in the Yellow and the East China Seas were presented from the plankton surveys from June, 1956 to July, 1960.
1) Sagitta bedoti: its predominancy in chaetognaths in fhe waters from the Yellow Sea was stated and two generations in a year were suggested.
2) Euphausia pacifica: the spawning in the winter to spring and two years' life span was suggested in the northern areas while another type of spawning, one year's life span, in the southern areas also suggested.
3) Pseudoeuphausia latifrons: its dense occurrence in the estuary of the Yantsu River was presented and the spawning in summer to autumn was suggested.
4) Leptochela aculeocaudata: its distribution restricted in the waters where the Kuroshio Current bears its influence and one of the spawning season in the summer were suggested.
5) Calanus helgolandicus: its predominancy in macrocopepods in the Yellow Sea and one of the spawning season in winter to spring were suggested.
