In the article Tuna's End, Paul Greenberg gives several examples of ways in which technological innovations are transforming the tuna industry, including refrigeration, long-lining, and development of effective net systems. In Japan, fish with white flesh was preferred over fish with red flesh because the red tended to spoil faster, refrigeration allowed fish to be kept fresh longer. Following World War II, Japan needed tuna for food for Japanese and also for export. During the post-war period, Japanese fishermen utilized the technique of long-lining, that uses thousands of baited hooks. In the 1970's, the development of light weight, high strength polymers allowed for the use of drift nets that were miles long. During the same period,