Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Te ara: Ko te roro te mea nui rawa e mohiotia ana o tetahi kararehe hou, kua ngaro ranei, e pauna ana i te toharite tata ki te 7.8 kirokaramu (17 pauna), neke atu i te rima nga wa te taumaha atu i te tangata, a he nui e tata ana ki te 8,000 cm3. Ahakoa he nui ake te roro i te nuinga o te wā e pā ana ki te mātauranga nui ake, ehara i te mea anake. He nui ake hoki te roro o ngā elephants me ngā dolphins i te roro o te tangata. He iti ake te encephalization quotient o te sperm whale i era atu momo whale me te dolphin, he iti ake i tera o nga apes anthropoid kore-tangata, he iti ake i te tangata. Ko te roro o te sperm whale te nui rawa atu i roto i nga momo kararehe katoa, i roto i nga tikanga tino me te whanaunga. Ka whakaitihia te pūnaha kakara, e tohu ana he ngoikore te kakara me te kakara o te sperm whale. Engari, ka whakarahihia te pūnaha whakarongo. Kaore i tino whanakehia te ara piramidal, e whakaatu ana i te whakaheke o ona waewae.  Pātai: He aha te rahi o te roro e pā ana?
8,000 whatianga