CECO integrates hydrological, water quality, ecological parameter monitoring, and underwater imaging technology, and realizes real-time monitoring and display through the online transmission of seafloor optical cable. It can obtain hydrodynamic, water quality, ecological parameters, as well as parameters of reef biological community, such as coral coverage, coral growth rate, fish density, fish species, large algae, large benthos species, and density, etc. Even, the change of coral ecological community under different short-term events such as rising tude, ebb tide, and storm surge.