Pfupisa nyaya yacho:  Kubvira pakanyorwa bhuku raHerman Melville rinonzi Moby Dick makore anodarika 150 akapfuura, masayendisiti ave achishamiswa nounhu hunoshamisa hwehove inonzi sperm whale nehama dzayo - hove duku dzinonzi pygmy whale uye midwife whale. Iye zvino, zvisaririra zvegoridhe rakatsakatika rakanga rafa mamiriyoni manomwe emakore akapfuura, zvapa nzwisiso itsva mukushanduka-shanduka kwemahove emazuva ano. Zvinhu izvi zvakawanikwa muPanama, zvinoratidza kuti nhengo inobatsira kuti whale iyi inzwe ruzha uye iite zvekuridza inenge ichinzwa inzwi rayo yakatanga kuderera. Zvinhu zvakawanikwa pane imwe hove inonzi pygmy sperm whale yakafa mamiriyoni manomwe emakore akapfuura zvakajekesa kuti hove idzi dzemazuva ano dzakavapo sei. Kunyange zvazvo chikonzero nei ikoku kwakadaro chichiri chakavanzika. Nepo maruva akawanda, madolphin, uye maporpoise ane zvinyorwa zvemafossil akareba, zvichiita kuti masayendisiti anzwisise kushanduka kwawo, pane ufakazi hushoma hwema sperm whale nemamwe maruva maduku maduku, ayo anokwanisa kufamba mumakungwa ari pasi pemvura. Zvino boka renyika dzakawanda renyanzvi dzesayenzi, rinotungamirirwa neNatural History Museum of Los Angeles County rakawana rudzi rutsva rwehove dzesperm whale dzakapera, dzinonzi Nanokogia isthmia, idzo dzinojekesa mativi anokosha okuchinja kwemhuka idzi. Huro dzevanhu vaviri dzakachengetedzwa zvakanaka dzakafukunurwa pamhenderekedzo yegungwa yeCaribbean yePanama. Kuwana kwacho kuchabatsira nyanzvi kuzadza zvikanganiso mukushanduka-shanduka kwezvipembenene. Uyu ndiwo muti wokushanduka-shanduka wemapere anoratidza kubatana pakati pemarudzi akaparara nemarudzi aripo, uye apo nhengo yespermaceti yakachinja chimiro. Zvinhu izvi zvakawanikwa muPanama zvinoratidza kuti pfupa iri rinoshandiswa pakugadzira ruzha uye pakuona nzvimbo inenge ichinzwika, rakaramba richiderera kubva parakatanga kuvapo. Kusiyana naizvozvo, hove dzinonzi sperm whale dzemazuva ano (dziri kuratidzwa pano) dzakakura chaizvo kudarika dzimwe dzakaparadzwa. Hove inonzi sperm whale ndiyo hombe pane dzose dzine mazino uye ndiyo hombe pane dzimwe mhuka dzinodya dzimwe dzine mazino. Ndiyo imwe chete yemarudzi matatu aripo mumhuri yemhove dzinonzi sperm whale, pamwe chete nemhove dzinonzi pygmy sperm...
Chikwata chesainzi chakawana rudzi rutsva rwehove dzepygmy sperm whale dzakanga dzatsakatika. Mapfupa ane makore mamirioni manomwe Nanokogia isthmia akawanikwa muPanama. Zvinoratidza kuti pfupa rinoita kuti pave nemutinhimira uye rinoita kuti munhu aone nzvimbo inonzwika inzwi rayo rakanga rava kuduku zvishoma nezvishoma mukuchinja kwemhuka iyi. Hove dzemazuva ano dzakakura dzinokwanisa kufamba zviri nyore pasi pemvura.