"This is Green Patrol! We never stop. And we never give up!" Martha's mum and dad went missing five years ago. Now Martha must keep doing what they had started - to protect the planet and its animals from TITAN. But she's not by herself. She has the help of her friends, too - they are Green Patrol! Their mission: TITAN have a new devious plan. They are going to sink an oil tanker in the Indian Ocean, endangering the ecosystem for many years. Green Patrol must act, NOW! And that's not all...HALO have a report that Martha's parents have been seen nearby. But why? This will be Green Patrol's hardest mission yet. And their most important one, too. Green Patrol: Ocean is part of the Astro range from Rising Stars Reading Planet. Astro books are ideal for struggling and reluctant readers aged 7-11. Each book is dual-banded so that children can improve their fluency whilst enjoying exciting fiction and non-fiction relevant to their age. Astro books for Earth/White band are also highly-decodable so ideal for extra phonics practice. Reading Planet books have been carefully levelled to support children in becoming fluent and confident readers. Each book features useful notes and questions to support reading at home and develop comprehension skills. Interest age: 8-9 Reading age: 6-7 years