In this story, you’ll learn how mountains slowly break down into tiny grains through erosion and weathering, and how rivers carry sand, silt, and clay all the way to the ocean. Along the way, we explore how dams can disrupt this natural journey, block sediment flow, affect fish like salmon, and cause beaches to shrink. But there is hope. Through science and community action, we discover how restoring rivers can bring back wildlife, improve water quality, and help rebuild beaches that protect our coasts.