1girl, 3, arms_behind_back, artist_name, black_eyes, blue_background, blue_eyes, closed_mouth, colored_skin, dorsal_fin, extra_eyes, extra_mouth, fins, full_body, gills, grey_skin, looking_at_viewer, monster_girl, multicolored_eyes, nude, original, shark_girl, sharp_teeth, simple_background, solo, teeth, twitter_username, underwater, yamanobe_saya, yellow_eyes