TheEastChinaSeawhichcoversatotalareaof750,000squarekilometersisasemi-closedsealyingbetweentheeasterncoastofChina’smainlandandthePacificOcean,boundedonthewestbyChina,ontheeastbytheKyushuandtheRyukyuIslandsofJapan,andonthenorthbyJichuIslandoftheRepublicofKorea(ROK)andtheYellowSea,andconnectedwiththeSouthChinaSeabytheTaiwanStraiton