In 1815, the Russian vessel Rurik set off on a three-year voyage through the Pacific and Arctic oceans in a quest to find the world's most elusive geographic feature, the Northwest Passage. Financed by a wealthy Russian count and commanded by a fame-seeking captain, the vessel carried four extraordinary observers of the natural world, including an Indigenous navigator from the Caroline Islands named Kadu. The Rurik failed in its mission, yet, as award-winning Pacific historian David Igler masterfully demonstrates, the crew's pursuit of "natural history" throughout the voyage and during its decades-long afterlife embodied a search for knowledge through science, artistic representation, and oral tradition. Failure to achieve a great discovery was common in the great age of scientific voyaging, but explorers, natural philosophers, and traveling artists grew adept at turning their explorations into documented achievements by claiming, publishing, and promoting a range of significant findin