Abstract: This paper presents a visualization in scientific computing(ViSC) technique that could be used in dynamic simulation of net cage. The experiments on the mooring system under regularwave condition and all kinds of currents were performed. According to above experiments, a new ViSC technique based on 3-Dimension surface rendering and dynamic coloration is put forward and implemented．This technique is efficient. The visual system was developed, based on the joint use of virtual reality modeling language(VRML) and Java.Internet users can browse the system and select different experimental data to observe and research it.