Zooplanktons have a limited ability to control their fine-scale distribution in the water column, but they are also at the mercy of oceanic currents and water movements. The distribution and abundance of zooplanktons are strongly influenced by many factors. The present study consists of 26 species at three different stations. In this study, maximum of these species are found in station-3, i.e., Pichavaram, than the other 2 stations. The species recorded in the present study belongs to families: Foraminifera (9), Calanoida (6), Cyclopoida (4), Appendicularia (4) Hydroida(1), Rotatoria(1) and Sagittoida(1). The zooplankton production gradually decreases with increasing depth, where the offshore stations yield less abundance than the coastal waters stations.