In January, April, and July ~ December, Udo Island is a perfect place for fishing. The depth of the water is about 20~30m and many kinds of fish including rock sea-bream and red sea-bream are abundant. Key fishing area are the seas off Dongchenjindong, Seocheonjindong, Sanghaumokdong and around Biyangdo Island and Juganmyeongwol.