This book narrates the uniquely intertwined life and scientific career of Nobel laureate Osamu Shimomura, with particular attention to his discovery of aequorin and Green Fluorescent Protein (GFP). It includes his early memories of Manchuria and wartime Japan featuring an eyewitness account of the atomic bombing of Nagasaki, his postwar studies and his travels to collect and research more than fifteen bioluminescent species, in locations ranging from Japan to San Juan Island, Bermuda, New Zealand and Norway. Dr Shimomura describes the unique combination of serendipity and perseverance that led ultimately to his 2008 Nobel Prize in chemistry. The book provides an engaging account of the life of a dedicated scientist, emphasizing the value of determination in the pursuit of pure scientific knowledge, and showing how a general understanding of science helped him open up new areas of research that have led to unforeseen applications in cell biology and medicine.