Sally Spray is an author of children's non-fiction books. She studied Early Years Education, then an MA in Children's Literature, and worked as a teacher before becoming an art director in children's publishing. Sally lives in the Cotswold countryside, and enjoys daily chats with her chickens, daughters and sometimes her husband, the illustrator Mark Ruffle. Her mission is to find out loads of interesting, really hard to understand stuff and pass it on to her readers as simply and concisely as possible.

• 1: How big are the oceans?2: What do we need the oceans for?3: How do the oceans move?4: What are the biggest creatures in the sea?5: Why do some sea creatures change colour?6: How do we explore the oceans?7: How long are the world’s coastlines?8: Is it an ocean animal or a plant?9: What’s the biggest coral reef in the world?10: Does anything live in the coldest ocean?11: How are the oceans under threat?12: What’s the future for oceans?13: Many more questions!14: Further information15: Glossary16: Game cards17: Index