Among the holoplankton; copepoda, appendicularia, chaetognatha,
doliolida, medusae, pteropoda, salpidae and siphonophora were encountered in every season, amphipoda was encountered in spring and winter, cumacea was encountered in winter, foraminifera was encountered in summer, autumn and winter, heteropoda and ostracoda was encountered in spring, autumn and winter, and radiolaria was encountered in spring and winter.