Since before recorded history, people have congregated near water. But as growing populations around the globe continue to flow toward the coasts on an unprecedented scale and climate change raises water levels, our relationship to the sea has begun to take on new and potentially catastrophic dimensions. The latest generation of coastal dwellers lives largely in ignorance of the history of those who came before them, the natural environment, and the need to live sustainably on the world s shores. Humanity has forgotten how to live with the oceans.