There'saseanearourhometown,buttheseahasbeenpollutedwhichhasbeencausedbytherubbishonthesea.It'ssodirtythatpeopledonotswimhereanylonger.Inrecentyears,thevisitorshavelitteredtherubbish,andtherestaurantneartheseaorthefactorieshavedischargedthewastewatertotheseawithoutbeingdealtwith.Inordertoprotectoursea,weshouldtakeaction.First,weshouldletpeopleknowtheimportanceofprotectingtheocean.Second,webanthevisitorstolittertherubbishintothesea.Third,wedon'tallowtherestaurantsandfactoriestodischargethewastewaterintothesea.