Seas and oceans, rivers and lakes, swamps and glaciers, permafrost in the highlands and polar regions - all this is water, the water shell of our planet. By opening this book, you will learn about the deepest seas, the longest rivers, the coldest glaciers and the largest lakes, waterfalls, springs, currents and much more. The book will expand the knowledge of schoolchildren about the nature of the Earth, help in geography lessons. For high school age.