Ingo Chronicles: The Deep. Nixenfluch, englische Ausgabe

In the depths of the ocean, a monster is stirring. Only one girl - half Mer, half human - has travelled to the bottom of the sea and returned alive. With the help of her friend the whale, Sapphy must return to the Deep to fight this terrifying creature - and her brother Conor and Mer friend Faro will not let her go alone.