Appearances of Chinese state aircraft and ships and Navy warships near Ieodo Island have sharply increased this year.
South Korea's Joint Chiefs of Staff submitted data to Rep. Chung Hee-soo of parliament's defense committee explaining that state-owned Chinese aircraft, including Navy choppers, flew over Ieodo 14 times between January and September.
Flyovers happened twice in 2010 and seven times last year.
Chinese government ships and Naval vessels are also popping up more around the island. There were 16 reported spottings in 2010 and 39 last year. So far in 2012, there have been 48.
International maritime law stipulates that a submerged rock can't be claimed as territory by any nation. However, South Korea effectively controls Ieodo, which it's closer to than any other country.