The sea is a wonderful place full of fish, mammals and other amazing creatures. What keeps the sea clean and what makes the sea dirty? Find out what animals are in danger from pollution and what you can do to help. This book also includes activity ideas. White Wolves Non-fiction is a guided reading scheme which takes a high-interest approach to core geography, history and science topics. It has been created to appeal to children and reflect the range of texts in the real world, from guidebooks to cookbooks. Covering a wide range of topics at different reading levels, these books are ideal for classroom and topic libraries, and for teaching non-fiction literacy skills in a curriculum context.