I Don't Believe in Mermaids is the eleventh episode of Season 1 of Mako: Island of Secrets. Nixie becomes despondent when she misses the pod and isolates herself from Sirena and Lyla. When she is out on the jetty, she runs into a little boy named Ben who doesn't want to go sailing with his parents. Nixie tells him he's better off taking care of himself and he runs away. Feeling that his running away is her fault, Nixie finds him and gives him the jar with Sirena's shell carving and tells him…