IAnatomy of a whale: Intliziyo yesigebenga
El intliziyo yomnenga Lelinye lawona malungu abangela umdla kwizilwanyana. Ubungakanani kunye nokusebenza kwayo kungummangaliso wokwenyani wendalo. Kwezinye iintlobo ubude bunokufikelela kwi-1,8 yeemitha kunye nobunzima malunga neekhilogram ezingama-600. Le ntliziyo inkulu ilungelelaniswe ngokugqibeleleyo ukumpompa umlinganiselo wegazi eliyimfuneko ukugcina i-colosi yolwandle iphila.
Indlela eliyilwe ngayo eli lungu libalulekileyo lisebenza kakuhle kangangokuba ivumela iminenga ukuba intywilisele ixesha elide ize imelane noxinzelelo olukhulu lwasemanzini olwandle. Ngexesha lokuntywila, isantya sentliziyo yeminenga siyehla kakhulu, nto leyo evumela ukuba yonge ioksijini kwaye ihlale ngaphantsi kwamanzi ixesha elide.
Ukuziphatha kunye nemikhwa yeminenga
Las Iminenga Baziwa ngokuba nobudlelwane kunye nokuziphatha okuntsokothileyo. Zizidalwa ezikrelekrele, ezinobudlelwane obusekwe kakuhle kunye nezenzo zonxibelelwano eziphucukileyo. Iminenga ineentlobo ngeentlobo zamazwi abizwa ngokuba 'ziingoma', ekucingelwa ukuba iwasebenzisela ukunxibelelana.
Into eqhelekileyo kwiminenga kukugqobhoza, okanye ukutsiba ngaphandle kwamanzi. Le ndlela yokuziphatha imangalisayo ineenjongo ezininzi ezinokubakho, kubandakanywa unxibelelwano, ukudlala, ukutshabalalisa iintshulube, kunye nokunciphisa i-thermoregulation.
Ukutya kweWhale
Ngaphandle kokuba sesinye sezilwanyana ezinkulu kwiplanethi, uninzi ukutya kweminenga ikakhulu krill kunye neentlanzi ezincinci. Iminenga inenkqubo ephucukileyo yokuhluza emilonyeni yayo, ebizwa ngokuba yibaleen, ethi isebenzise ukubamba ukutya kwayo emanzini.
Nangona kunjalo, ezinye iintlobo zeminenga, ezifana ne-orcas, zinokutya okuhlukahlukeneyo kwaye zinokutya ama-seal, amafudo olwandle, iintaka kunye nezinye izilwanyana zaselwandle.
Umjikelo wobomi beminenga
Umjikelo wobomi a umnenga Inde ngokungaqhelekanga, kunye neentlobo ezininzi ezidlula ngokulula kwiminyaka engama-60. Ezinye iintlobo, ezifana ne-bowhead whale, zinokuphila iminyaka engaphezu kwama-200 endle.
Umjikelo wobomi bomnenga uquka izigaba ezininzi: ukuzalwa, ubuntwana, ukufikisa, ukukhula nokuguga. Iintsana zeminenga zizalwa zikhule kakuhle. Bayakwazi ukuqubha ngokukhawuleza emva kokubeleka kwaye bafunde ngokukhawuleza koonina indlela yokuphila kunye nokuchuma kwihlabathi laselwandle.
Ulondolozo kunye nezoyikiso kwiminenga
Okwangoku, iintlobo ezininzi zeminenga zisongelwa yimisebenzi eyahlukeneyo yabantu. Phakathi kwezona zoyikiso zibalulekileyo kukulotywa kweminenga, ungcoliseko lolwandle, ukuloba ngokugqithisileyo, utshintsho lwemozulu kunye noqhanqalazo lweenqanawa.
Kubalulekile ukuba sisebenzele ukukhusela ezi zidalwa zibalaseleyo kunye nendawo yazo yokuhlala. Iminenga iyadlala a indima ebalulekileyo kwi-ikhosistim yolwandle, ifak’ isandla ekuchumiseni i<em>phytoplankton, ethi yona ixhase umxokelelwano wokutya oyimfuneko kubomi baselwandle uze uncede ukufunxa ikharbon diokside kwimekobume.
Ukufunda kunye nokuqonda ubomi beminenga kusivumela ukuba singayixabisi nje kuphela ubuhle bayo kunye nokuguquguquka okumangalisayo, kodwa kunye nobutyebi obukhulu kunye nokuxhomekeka kobunzima bobomi kwiplanethi yethu.