Kummandla omkhulu wezilwanyana, kukho iindidi ezikhwankqisayo ngobukhulu bazo kunye neempawu zazo. Noko ke, xa sizibuza "Sesiphi esona silwanyana sikhulu ehlabathini?", impendulo ngokuqinisekileyo yalatha kummi omkhulu waselwandle. Eli nqaku liphonononga ubomi, amasiko, ukutya, indawo yokuhlala kunye nezinto ezinomdla kwesi silwanyana sikhulu.
Umnenga oBlue: Ingxilimbela yeeLwandle
La Umnenga oluhlaza (*Balaenoptera musculus*), ngaphandle kwamathandabuzo, sesona silwanyana sikhulu esakha sabakho eMhlabeni. Esi silwanyana sanyisayo sinokufikelela kubukhulu obunomtsalane, ubude baso bungaphezulu kweemitha ezingama-30 kunye nobunzima obufikelela kwiitoni ezili-180. Kuphantse kube yinto engathandekiyo ukucinga ngesidalwa esiphilayo esikhulu kangaka, kodwa umnenga oluhlaza yiyo.
Ukongezelela kubukhulu bawo, umnenga oluhlaza unentliziyo enobunzima obumalunga neekhilogram ezingama-600, ubukhulu obunokulingana nenqwelo-mafutha encinane. Ezi cetaceans zikhulu ezinomaleko oshinyene kakhulu wamafutha abizwa ngokuba yi "blubber", ezivumela ukuba zigcine ubushushu bazo kumanzi olwandle abandayo.
Iindawo zokuhlala zeMnenga eBlue
Umnenga oluhlaza unokufumaneka kuzo zonke iilwandle zehlabathi, ukusuka eArctic ukuya eAntarctica. Bakhetha amanzi abandayo atyebileyo ngekrill, eyona mthombo wabo wokutya. Ngexesha leenyanga zasehlotyeni, zidla ngokufudukela kumanzi akwincam yomhlaba apho iikrill zininzi, ziqokelela amanqatha ebusika.
Ngexesha lasebusika, zifudukela kwiindawo ezifudumeleyo. Oku kufuduka kwamaxesha onyaka kubavumela ukuba basebenzise iimeko ezahlukeneyo zokusingqongileyo kunye nemithombo yokutya ekhoyo kwimimandla eyahlukeneyo yesijikelezi-langa. Inika umdla indlela ezi ngxilimbela zaselwandle ezihamba amawaka eekhilomitha minyaka le zikhangela iimeko ezingcono zokuphila.
Ukutya kunye neMikhwa yokuTya
Ukutya kwe Umnenga oluhlaza Iqulunqwe phantse ngokukodwa ikrill, iicrustaceans ezincinci ezenza ibubu elikhulu kumanzi avulekileyo. Umnenga oluhlaza unokutya ukuya kutsho kwiitoni ezi-4 zekrill ngosuku ngexesha lokutya. Basebenzisa indlela yokutya eyaziwa ngokuba "kukucoca" kwiindevu zabo.
Iminenga ivula imilomo yayo emikhulu kwaye idade phakathi kwe-krill swarms, emva koko ivale imilomo yayo kwaye ikhuphe amanzi ngaphandle kwe-baleen yayo, igcina i-krill ekugqibeleni ifakwe. Le ndlela isebenza kakuhle kwaye ivumela umnenga oluhlaza ukuba uzondle ngokukhawuleza ukuxhasa ubukhulu bawo.
Ukufuduka kunye noBomi beNtlalo
Iminenga eblue ayizozilwanyana zodwa; Zinokufumaneka rhoqo kumaqela amancinci. Ngexesha lokufuduka, kunokwenzeka ukujonga ezi colossi zihamba ngababini okanye amaqela amancinci. Unxibelelwano phakathi kwabo lubangel’ umdla; Basebenzisa izandi ezisezantsi ezinokuthi zihambe amakhulu eekhilomitha ngaphantsi kwamanzi.
Ezi vocalizations azikho nje ukunxibelelana ngexesha lokuzingela kunye nokufuduka, kodwa kunye neenjongo zokuzala. Ngexesha lokukhwelana, iinkunzi zenza izandi ezintsonkothileyo nezahlukeneyo, ekukholelwa ukuba zisetyenziselwa ukutsala iimazi.
Izinto ezinomdla malunga neBlue Whale
Umnenga oluhlaza uphila ixesha elide ngokwaneleyo, ukwazi ukuphila iminyaka ephakathi kwama-70 nama-90, yaye kukho imiqondiso yokuba abanye baye baphila ngaphezu kweminyaka eli-100.
Ezi zidalwa zikwanazo nengoma yeempawu; Isandi sabo siphakathi kwezona zingxolayo kwizilwanyana kwaye sinokuviwa kumgama ongaphezu kweekhilomitha ezili-1,600 ngaphantsi kwamanzi.
Ngaphandle kobukhulu bayo, iminenga ezuba iyakhawuleza ngokumangalisayo kwaye inokudada ngesantya esingama-50 km/h ngamagqabantshintshi amafutshane. Le nyaniso iyamangalisa kwaye ibonisa ukugqibelela kokuziqhelanisa nokusingqongileyo kolwandle.
ULondolozo kunye Nezoyikiso
Kwixesha elidlulileyo, i Umnenga oluhlaza Yayizingelwa ngamandla ioli neendevu zayo, iphantse yafikelela esiphelweni sokuphela. Namhlanje, ngenxa yemigaqo-nkqubo yokhuseleko yamazwe ngamazwe, abemi bayo baya bechacha kancinane.
Nangona kunjalo, basajongene nezoyikiso ezibalulekileyo, ikakhulu ezisuka kukutshintsha kwemozulu, ungcoliseko lolwandle kunye noqhanqalazo lweenqanawa. Kubalulekile ukuba siqhubele phambili ngamaphulo olondolozo lwendalo ukuqinisekisa ukuba ezi ngxilimbela zimangalisayo ziyaqhubeka nokutyhutyha iilwandlekazi kwixesha elizayo.
Ngamafutshane, i-blue whale ayiyona nje isilwanyana esikhulu kunazo zonke emhlabeni, kodwa ingumzekelo othakazelisayo wokuziqhelanisa kunye nokuphila kwindawo yolwandle. Ubungangamsha kunye nobukhulu bayo buyaqhubeka ukuba yinto encomekayo kwaye ifundwe kwihlabathi liphela.