These were women who lived in the island dotted oceans of an unidentified world in Series Five. Christopher loved playing in the white sand he found there. The Mermaids were fond of teasing Christopher Chant by calling him Clistopher. He thought of them as The Silly Ladies. The Mermaids gave Christopher sevaral toys that he dropped when crossing the World Edge, but managed to hang on to a necklace that they gave him because he wore it around his neck. It proved to be made of pearls shaped like human skulls.