【Peoplewanttoknowhowfishcanhearsoundswithoutears.Butfishdohaveears.WecannotseethePeoplewanttoknowhowfishcanhearsoundswithoutears.Butfishdohaveears.Wecannotseetheearsbecausetheyareinsidetheirbodies,andtheyhear】

　　Peoplewanttoknowhowfishcanhearsoundswithoutears.Butfishdohaveears.Wecannotseethe

　　Peoplewanttoknowhowfishcanhearsoundswithoutears.Butfishdohaveears.Wecannotseetheearsbecausetheyareinsidetheirbodies,andtheyhearverywellwiththem.Theirlisteningismuchbetterthanman's.

　　Manywateranimalsmakenoiseswhiletheyaredoingsomething.Soundsarerealwordsofthem.Bysounds,theyknowwheretheyareandwhichwaytogo.Whentheyfacedangerortheyfindfood,theyalwaysmakesoundstotellothersthegoodnews.

　　Anewfieldinscienceistolearnthemeaningsofunderwatersounds.Peopleusethesameskillthattheyhaveusedinlearningthesecretsofbirds'calls.Butthismethodismoredifficulttouseintheseabecausemanyoftheseaanimalscannotbeeasilyfollowedandstudied.Wehavenotanyotherwaytostudythesoundsinthesea.Perhapsthemeaningofthecallsoftheseaanimalswillbeknownmoreclearlysomeday.Itwillbeusefulforustolearnthe,secretsofthesoundsinthesea.