20 the disposal of high-level radioactive wastes. The Committee on Oceanography for the National Academy of Sciences has recommended a program in oceanography for the years 1960-70. Part of the program is for the study of radioactivity and has been planned with the expectation that the oceans may be used as a disposal area for high-level radioactive wastes. The section on “Radioactivity in the Ocean" from Chapter I of the report by the Committee on Oceanography of the National Academy of Sciences an appendix to this report. (1959) is included as Fulfillment of the recommended program also would provide answers to questions regarding fallout in the ocean. A study that is in process and will be reported in the near future is the radiological analysis of 2700 tuna samples from the Western Pacific that were collected before, Hardtack series (Donaldson, during and after the 1959b). The presence of fallout in the ocean provides a unique oppor- tunity to study basic biological and physical processes in the sea. The addition of radioisotopes to the ocean, especially in the vicinity of the Eniwetok Test Site during a weapons testing program, provides tracers for the study of mineral metabolism and transport, or of the movement of ocean currents, tant research problems. or other impor- Fallout in the ocean provides a tool for alarge-scale field experiment that cannot be duplicated elsewhere. The assistance of Dr. Edward Held in the preparation of this report is acknowledged with pleasure.