Discover how an ocean is made - and how life developed on Earth - in this stunning picture book by Waterstones award-winning Sally Nicholls and illustrated by rising star Carolina Rabei. Who made the oceans? An ancient god? A magic spell? A billion firefighters and all their hoses? Come on a trip to the Sea Museum with Dad, and find out how the oceans came to be, and why they're so important to our planet. Also in the Who Makes... series: Who Makes a Forest?