Seasonal collections were made to record the
physicochemical and phytoplankton characteristics of the
Kattumavadi coast. Weather data have been collected from the
meteorological department, Chennai and given in Table 1. A
calendar year was divided into four seasons viz. postmonsoon
(January-March), summer (April-June), premonsoon (July-
September) and monsoon (October-December) based on the
northeast monsoon which is prevalent in the study area.