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1、ThecolorfulcoralreefsTheformationofcoralreefsCoralisoneoftheMarinecoelenterates,whichfeedonpreyontheoceantinyplankton,canabsorbthecalciuminthewaterandcarbondioxideinthegrowthprocess,andthensecretelimestone,intohisshellofsurvival.Everysinglecoralonlythegrainsize,theyareagroupofagrouptogathertoget
2、her,thegenerationsmetabolism,growth,reproductionandcontinuouslysecretelimestone,andtogether.Thelimestoneafteraftercompaction,petrochemical,formingislandsandreefs,knownascoralreefs.Coralsarebiological,cnidariadoor,includedanimalssuchasjellyfish,polyps,softcoralandseaanemones. Coralreefs,ismadeupo
3、fstonecoralspurposecoralskeletons.Thebonesofmaincomponentiscalciumcarbonate(CaCO3).TheclassificationofthecoralAccordingtothepresenceofsymbioticalgaecanbedividedinto: Aclassofreef-buildingcoralsaresymbioticalgae,livinginshallowareasofthesunshine; Anotherkindisnoalgaesymbiosisofreef-buildingcorals
4、,liveinthedeepsea.Theclassificationof thecoralreefsAccordingtoformdivisionare:fringingreef(fringingreef),thebarrierreefandreefatoll,tableandsometransitiontype瑚礁的分类FringingreefBarrierreefBarrierreefisalsocalledthebarrierreef,likelongbeach,aroundtheoutsideofthefartheroffshore,andseparatedbyawidesh
5、allowseasandcoast,orthroughaknownasthewatersofthelagoon.SuchasAustralia'sGreatBarrierReefatollAccordingtothesettlementofDarwin'stheory,themajorityofcoralreefsisthroughvolcanicactivityintobasaltformedislanddevelopment,duetofallingoftheland(orsearise)andformatoll.Theformationof theGreatBarrierReef
6、Coralpostureisexquisite,colorandlusterisbeautiful,canonlyliveintheyearkeepin22to28degreesofwater,watertemperatureandwatermustbecleanandtransparent.Australia'snortheastcoastoutercontinentalshelfwatersaretheidealconditionsofreproductivecoralpolyps.Coralreefbuildingprocessisveryslow,inthebestcondit
7、ion,thethickeningofthereefbodyeveryyearbut3-4cm.Somerockthicknesshasamountedtohundredsofmeters,explainthe"architect"herehasgonethroughalongtime.AtthesametimealsoshowsthatAustralia'snortheastcoastonthegeologichistoryofsubside
