Scarlett's new friend

Adventure fiction. Coral Kingdom is protected by six powerful crystals which fade each year and have to be replaced. Queen Neptuna sends six young mermaids on a mission to fetch the new crystals. Can they battle the wicked-natured Mantora, help the sea life and make it back in time? Mantora has tricked some Humans into ruining a beautiful beach. The mermaids simply can't ignore it and this time Scarlett comes up with a plan to outwit Mantora, as well as saving a family of seals from a terrible mess.