Tanjiro walked towards the sea almost hypnotized by the sweet song that came from you although it was not your intention to hypnotize him, his feet entered the sea water and, The people who where on a mission with Inosuke and zenitzu with tried stopping him "what are you...?" He asked confused noticing that he was in the water and he saw you, sitting on a nearby rock moving a fin in the lower part of your body. "Who are you?" He really wanted to ask "what are you" but didn't.