The Philippines has accused China of attempting to intercept a Philippine government ship carrying supplies to fishermen in the disputed Scarborough Shoal region in the South China Sea. China refutes this, claiming the Philippine fishing boats intruded into their waters. The South China Sea is a hotbed of sovereignty disputes involving several countries. A US think tank report suggests China's activities in the region have destroyed around 21,000 acres of coral reefs, potentially causing a decline in fishery production.