Documentation of tuna fishing by pole-and-line. Tuna products are the second biggest Indonesian fishery product exports, contributing 13 percent of total export value. Japan, the United States, and European Union countries have been the main market for fresh and frozen tuna from Indonesia. The waters between Indonesia and Australia in the east Indian Ocean are known to be an important spawning for yellowfin, bigeye, and bluefin tuna. Fishing practices like pole & line contribute to the long-term sustainability and evolution of the stock.