Bangobani Abavakashi Bonyaka Ngamanzi aseHawaii?
Kusukela ngoNovemba kuze kube ngoMeyi, amanzi eHawaii avakashelwe ngama-humpback angama-1000 angama-whale.
Lezi zingulube ze-humpback ziye zathuthela emanzini afudumele eHawaii avela enyakatho asenyakatho njengeziqhingi zase-Aleutian zase-Alaska, njengaseMpumalanga njengeGlacier Bay nasezindaweni ezikude eningizimu njengeziqhingi zaseFarallon ezisogwini lwaseCalifornia.
Kungani Ukuzithoba Kufika eHawaii?
Lezi zingonyama ezinamahlumela zifika emanzini afudumele eHawaii lapho zibeletha khona, zibalela, futhi zibahlengikazi zazo.
Lolu hambo lwama-3500-miles ukusuka ezindaweni zabo zokudla zasehlobo kuthatha phakathi kwezinyanga ezimbili nezinyanga ezimbili.
Iqinisekisa ukuthi abesifazane abakhulelwe nabomama abanamathole amasha bachitha isikhathi sabo esiningi emanzini afudumele eHawaii.
Ama-humpback amathole awakhulelwa futhi azalwa eduze neziqhingi zaseHawaiian. (Isikhathi sokubeletha sowesifazane sisezinyangeni eziyi-10-12.)
Ake sifunde ulwazi oluyisisekelo mayelana nesigijimi sasebusika sonyaka waseHawaii.
Iyini i-Humpback Whale?
I-humpback whale yiyona eyesihlanu enkulu kunazo zonke ezinamaphiko amakhulu emhlabeni.
Igama layo lezesayensi, i-Megaptera novaeangliae, lanikezwa lona ngo-1781 ngumbhali wemvelo waseJalimane ogama lakhe linguBorowski, okusho ukuthi "I-Big-Winged New Englander," ebhekisela ngobukhulu bemifino emikhulu yomsila futhi ogwini lwaseNew England.
Igama elivamile kakhulu lesiNgisi le-humpback libonakala livela ekuthambekeni kwesilwane ukuzungeza emuva lapho kudilika.
I-whale i-humpback i-gray-black, i-blue-black ibe yumnyama omnyama embala, enezimpande ezimhlophe ezingaphansi kwamandla angabonisa ukumnyama okumnyama okuhluka ngokusho kwe-whale ngayinye. Kungenxa yalezi zimpawu, futhi ikakhulukazi lezo ezitholakala emsila, leyo mikhawulo ngayinye ingabonakala futhi amaphethini wabantu namaphutha aqoshiwe.
Izintuthwane ezinamahlombe nazo zinamaphiko (noma ama-pectoral fins,) asezindaweni zonke zomzimba wawo. Lezi zisetshenziselwa ukuphenduka nokuhamba. Ama-whales yizilwane ezincelisayo, njengabantu, kanti lezi zimpondo ziyizimbono zangaphambili ezishintshiwe, nesakhiwo sesithambo esifana nesesandla somuntu nesandla.
Uma izalwa, amathole anesilinganiso semithalogremu angu-3000 nobubanzi kusuka ku-10-16 ubude ubude. Zingakhula ziba ngamamitha angu-40 kuya ku-ubude, kanti izinsikazi zikhulu kakhulu kunamadoda.
I-hummpback ekhulile ngokugcwele ilinganisa ithani elilodwa ngezinyawo, noma cishe ngamapounds angu-84,000 - 90,000. Abacwaningi bakholelwa ukuthi izimpikiswano zihlala phakathi kweminyaka engama-40-60.
Yini i-Humpback Whale edla?
Ama-whales ama-humpback avame ukudla ngaphakathi kwamanzi angaba ngu-150-160.
Izinhlanzi zaseNyakatho ePacific zidla izinhlanzi noma izinhlanzi ezincane zokufunda ezifana ne-mackerel ne-Pacific saury. Izinhlanzi zihlunga ukudla kwazo emanzini amaningi aqukethe izinhlanzi ezilethwa emilonyeni yazo. Izintuthwane ze-humpback zinezikhukhula ezinamandla ezithintekayo ezikhulisa umlomo wazo ngesikhathi sokudla.
Uma konke ukudla kukhona emlonyeni, umlomo uvaliwe futhi amanzi agxiliwe. Phakathi naleso sikhathi, ukudla kubanjwa kulokho okubizwa ngokuthi "amapuleti e-baleen" bese kuthiwa ugwinye.
I-Baleen ikhula phakathi nokuphila komkhomo. I-Baleen ibizwa nangokuthi i-whalebone. I-Baleen iqukethe uchungechunge lwezinto eziqinile, eziguquguqukayo ezilenga emthonjeni ophezulu.
Ingaphakathi le-baleen ihlanganiswe ngamapulethi ezinwele ezimhlophe ezithinta iplantiki, izinhlanzi nezinhlanzi ezincane. I-Baleen yenziwe nge-keratin (into efanayo kanye nezinkuni nezinwele zenziwa).
Ukuziqhenya kungadla ukudla okwetafula ngosuku lwesikhombisa. Kodwa-ke, ngokuvamile, ayidli ngenkathi eseMelika eHawaii, ezindaweni zabo zokubanda ubusika.
Ungabheka Kanjani Ama-Humpback Whale?
Indlela engcono kakhulu yokubona imikhomo ye-humpback e-Hawaii inokuvakasha okuhlelekile kwesikebhe. Ngenkathi kuneziningi eziningi ezihlinzekwa kuzo zonke iziqhingi eziyinhloko, okungcono kunazo zonke izivakashi ezihlinzekwa yi-Pacific Whale Foundation eMaui.
I-Pacific Whale Foundation yinhlangano engeyona inzuzo eyasungulwa ngo-1980 ukusindisa imikhomo ekuqothulweni.
I-eco-tour ngayinye iqondiswa ngabachwepheshe be-whale abazochaza ngokuningiliziwe ukuziphatha kwemikhomo futhi bakusize ukuwabona emkhunjini wakho. Emanzini amaningi uzokwazi ukuzwa imisindo yangempela yamahalengwane olwandle oluzungezile.