A scientific adventure story that dramatizes how profoundly our oceans have changed over the past 150 years In December 1872, HMS Challenger embarked on the first round-the-world oceanographic expedition. Its goal: to shine a light for the first time on the mysteries of the deep sea. For the next four years, Challenger’s naturalists explored the oceans, encountering never-before-seen marvels of marine life. The expedition’s achievements are the stuff of legend. It identified major ocean currents and defining features of the seafloor, including the Mid-Atlantic Ridge and Mariana Trench. It measured worldwide sea temperatures and chemistry, creating baseline data for all ocean research since. And, most spectacularly of all, it collected nearly five thousand sea creatures and plants new to science. In The Wake of HMS Challenger, Gillen D’Arcy Wood looks afresh at this legendary scientific odyssey and shows why, 150 years later, its legacy looms larger than ever. The Challenger’s