  The Foreign Ministry said it submitted documents claiming
waters extending beyond its 200-nautical-mile (370-kilometer)
exclusive economic zone. It said geological features dictated
that China's claim extended to the edge of the continental shelf
off the Chinese coast, about 200 kilometers (124 miles) from
Japan's Okinawa island.  A statement posted to the Foreign
Ministry's website gave no specifics, but China had pledged to
make such a submission shortly after its dispute with Japan over
uninhabited islands in the East China Sea flared again in
September. Japan angered China by buying the islands from their
private Japanese owners to block a rival bid by Tokyo's
nationalist mayor, a move Japan had hoped would prevent a bigger
crisis.  Violent anti-Japanese protests then broke out across
China to assert what many Chinese believe is their country's
ages-old claim on the rocky outcrops, known as Senkaku in Japan
and Diaoyu in China. Taiwan also claims them.  China's move is a
way for it to underscore its cla