Icebergs loom large in Joy McCann’s Wild Sea: A history of the Southern Ocean. They are one of the most recognisable features of the higher latitudes of the Southern Ocean and the one that people often look forward to the most when voyaging south for the first time. Ice gets its own chapter in an inspiring book that spans the geologic and human history of this great swath of howling, tide-swept body of water that girdles the world.