I Wonder Why: The Sea Is Salty And Other Questions About The Oceans

Colourful, surprising and full of information, the I Wonder Why books have set thousands of young minds buzzing. I Wonder Why the Sea is Salty is the perfect introduction to the oceans, featuring mountains under the sea, singing whales, divers and much more!
What do you want to find out? Clear, lively text answers all those tricky questions about how the world works, while friendly, funny cartoons add interest. With more than 35 titles across a mind-expanding range of subjects, this is a series guaranteed to amaze and amuse.