Join Sam Robinson, a marine research fellow, Giles Miller, a micropalaeontology expert, and Erica Jones, a curator of navigation, as they dive into the groundbreaking Challenger Expedition of 1872-1876. They discuss the astonishing discoveries of new marine species and the first evidence of life in the ocean's depths. The conversation highlights the logistical challenges faced by the crew and the influence of telegraphy in sharing their findings. This voyage is revealed to be as revolutionary as the Apollo missions, laying the groundwork for modern oceanography.