On June 28, 1991, George P. Cressman interviewed Athelstan Spilhaus at Spilhaus' home in Virginia for the American Meteorological Society and the University Corporation for Atmospheric Research's Tape Recorded Interview Project. The interview explores Spilhaus' diverse career as a meteorologist, oceanographer, educator, and inventor. Spilhaus recounts his early academic influences, including his studies at the University of Cape Town and MIT, and his transition from aeronautics to meteorology under the mentorship of Carl-Gustaf Rossby. He discusses his contributions to meteorological instrumentation, notably the invention of the bathythermograph, which revolutionized oceanographic measurements. Spilhaus details his efforts to establish and expand meteorology and oceanography programs, including his pivotal role at New York University and his collaboration with prominent meteorologists. He reflects on his wartime service, his leadership in military atomic tests, and his advisory roles in U.S. defense and scientific organizations. Spilhaus also discusses his involvement in international initiatives, such as the International Geophysical Year and the establishment of Sea Grant colleges to advance oceanographic research and policy. The conversation highlights his perspectives on the integration of oceanography and meteorology, the evolution of atmospheric sciences, and the challenges of balancing scientific inquiry with practical applications like forecasting. Spilhaus concludes by reflecting on his retirement hobbies, including his interest in mechanical toys, and his enduring influence on atmospheric and oceanic sciences.