Marine Natural Products Chemistry is essentially a child of the 1970's that developed rapidly during the 1980's and matured in the last decade. With a few notable exceptions, it is difficult to select individual papers that significantly impacted the field. However, marine natural products chemistry has often influenced other fields and that aspect is the focus of this review. It is clear that the early directions taken by marine natural products chemists drew as much from the examples provided by insect chemical ecology as from the longer history of phytochemistry. By 1975 there were already three parallel tracks in marine natural products chemistry: marine toxins, marine biomedicinals and marine chemical ecology. It is the integration of the three fields of study that has given marine natural products chemistry its unique character and vigour.