Kids have likely seen a leaf drifting down a stream or a boat churning up a river. These veins of water connect the land and the sea. They bring rainwater to the ocean where it can evaporate, continuing the water cycle. This book will explain that process. It will also include features unique to rivers, such as rapids, and the different plants and animals that live in and near rivers.

Marshes, swamps, and bogs can seem remote and even impenetrable to kids. Yet these ecosystems host a diverse range of plants and animals. This book explores the importance of wetlands, and why some people are concerned that they are often threatened or destroyed by human development.

It might seem impossible to kids that water can simply arise from the ground as if from nowhere. This book explores how water can collect underground in aquifers and then come out at Earth's surface. Springs are unusual and often beautiful bodies of water that play an important part in continuing the water cycle.