Cleanliness of deep ocean water

Abstract

Within 3 major characteristics of low temperature, rich nutrients and cleanliness of deep ocean water, cleanliness is reviewed based upon information reported in the world in the following 7 aspects; 1) biological, 2) contamination of pathogenic and polluted organisms, 3) chemical pollutants, 4) suspended matter, 5) organic matter, 6) heavy metals, and 7) radioactive materials. Possible advantages of resource utilization of deep ocean water supported by each aspect of cleanliness are described, and probable changes of cleanliness during various storages of deep ocean water are also mentioned.