Abstract
The aim of this study is to estimate seaweed and herbivore distributions at deep ocean water (DOW) discharged area by using seaweed ecosystem model. The ecosystem model has been developed based on the results of field survey and biological experiments, and consists of three seaweed species, a sea urchin species and fore herbivorous fish species. The results of numerical simulations suggest that the DOW discharge may restore seaweed bed and herbivore biomasses increase at the restored seaweed bed.