Meet mermaid Marina and her sea pony Bubbles in this adorable underwater adventure! This easy reader is perfect for kids learning to decode words -- and it comes with an exclusive necklace! Marina Sparkletail is excited to meet her sea pony, Bubbles, for the very first time! She can't wait for them to become sea -questrian superstars like her big sister, Sirene, and her sea pony, Quille. But things don't go quite as planned. Will Marina and Bubbles ever become friends?.