Read manga: Marine Blue

Other name: 마린블루
Genres: Shoujo ; Supernatural
Artists: Eo Suk Il
Status: ongoing

From M.N.M.:Young Chaeyeon has just lost her father and suddenly ends up living on an island with her grandfather. That's where she'll meet a strange boy coming from the sea who will change her life. Apparently mute, the young man will quickly give proof of great intelligence. But his previous aquatic life seems to catch up with him...