Cage culture in coastal waters become popular in southern Taiwan. Problems frequentlyarise because of poor site selection. In order to acquire hydrographic conditions ofcoastal fishing grounds and cage culture areas, a prototype of data collection andtransmission system will be established. Oceangraphic parameters such as watertemperature, light intensity, turbidity others of the culture environment are collected byvarious sensors setting on site of a cage . Also, a CCD camera is used to get images offish activities in the cage. All the digital data and images are recorded in the memory ofeach sensor for a period of time and transmitted by means of wireless technology likeGPRS or Wi-Fi technology to the server in computer center of Fisheries ResearchInstitute. Integration of 3S technology(GPS,GIS,RS) will be useful to aquaculture siteselection or disaster pre-warning analysis applications .The collected data is processedand transferred into a database for further analysis using GIS system.