With an eye toward the STEM disciplines, this book will excite anyone who is interested in the science of something that most of us take for granted: water. With straightforward and compelling language, this book teaches readers about the basic functions of the oceans and seas, the biodiversity in large bodies of water, how rivers, streams, and lakes work, and water management, among other details of the mechanics of water. This book will give readers a greater appreciation of this most abundant yet scarce resource, as well as of environmental causes in general.