In this book, children learn all about oceans and seas, including what oceans and seas are like, different things that live in oceans and seas, and how to stay safe near oceans and seas. The book also includes world maps showing different oceans and seas around the world.

In this book, children learn all about rivers and streams, including how streams turn into rivers, different ways in which we use rivers and streams, and how to stay safe near rivers and streams. The book also includes a world map showing the longest river in each continent.