withtherapiddevelopmentofoceaneconomy,theseaareasaregettingpollutedmoreandseriously,andtheenviromentissufferingdistinguisheddecreaseinqualiy.besides,theeco-enviromentischandingfortheworse,whichistothedetrimenttobothbiologicalresourcesandthehealthofhumanbeings.moreover,wecanneverneglecttheoceanpollutionbroughtbytheships.