As a young girl, Hannah Stowe was raised at the tide's edge on the Pembrokeshire coast of Wales, falling asleep to the sweep of the lighthouse beam. Now in her midtwenties, working as a marine biologist and sailor, Stowe draws on her professional experiences sailing tens of thousands of miles in the North Sea, North Atlantic, Mediterranean, Celtic Sea, and the Caribbean to explore the human relationship with wild waters. Why is it, she asks, that...