What happens to beached whales公开课教案教学设计课件资料.docx

Whathappenstobeachedwhales?鲸鱼搁浅对我们有何启示？

鲸鱼搁浅在海滩上的新闻虽然在全球并不少见，却也令人心痛惋惜。鲸鱼为何搁浅，搁浅后又会发生什么呢？人类如何帮助搁浅的鲸鱼，维护海洋生态环境的平衡和多样？本文介绍了关于目前有关鲸鱼搁浅现象的研究和认识。

词汇：whales鲸鱼

InJuly2024,a?pod?of77?pilot?whales?washedup?onabeachinOrkney,Scotland.Itwasthelargest?mass?stranding?ofwhalesinScotlandfordecades.Scientistsdontknowexactlywhywhales?beach?themselves.Onetheoryisthatclimatechangeisdrivingwhalesfoodclosertothe?shoreline,wheretheythengetstuckasthe?tide?goesout.Ifasingleanimalisfound,itisusuallybecauseitissickorhasbeeninjured.

IntheOrkneystranding,12ofthewhaleswerestillalivewhentheybecamebeached.Whenthishappens,?marine?organisationsassesswhetherawhalecanbesafely?refloated.Professionalsandmembersofthecommunityoftencometogether,covertheanimalinwetsheetsandpourbucketsofwateroverit,thoughnotthe?blowhole,untiltheanimal?drifts?back?out?totheocean.Thoughitsnotalwaysahappyending.?

Forthosethatdontsurvive,a?post-mortemexamination?isoftencarriedout.DrBrownlowoftheScottishMarineAnimalStrandingSchemetoldtheBBCthatthesecanrevealalotaboutthewhaleslifeandthereasonswhyitwasbeached.In2024,averyrarespeciesofwhaleturneduponabeachinNewZealand–a?spade-toothedwhale.Whilethisissad,the?carcass?was?dissected?inordertohelpresearchersacquirenewinformationaboutthespecies.Fromascientificand?conservation?pointofview,thisishuge,GabeDavies,aDepartmentofConservationofficial,said.

Somebeachedwhaleswhodontsurvivehavetheir?skeletons?senttomuseums,whilemanyothersarereturnedtothewater.Thisensuresthemarineenvironmentbenefitsbecausewhalecarcassesgiveoffmanynutrients.Whentheyfallanddieandsinktothebottomoftheocean,theyformtheselittle?nutrient-rich?islandsthatcansupportahuge?diversity?oflife,saysDrBrownlow.?

Themoreresearchthatcanbedone,thebetter.For