THE sparse beard of Nirang, 60, swayed as it was blown by the wind. That morning the people of Seraya Besar Island were busily straightening out their rawai lines. This fishing line, made from steel and nylon cord, is specifically made to catch sharks. The price paid for this savage fish is certainly not very much, only Rp2,500 a kilogram. What are enticing, though, are its fins. The price of shark fins is very high—Rp270,000 to Rp1 m