Ko ngā pūpū wai he taputapu maha kia whakamārama ai i te wai mai i tēnei wāhi ki tērā. Ka whakamahinga i ngā kāinga, i ngā pāmu, i ngā umanga maha. Ko tēnei he wāhanga matua o ēnei pūpū: ko te whakamāngō. Ko te whakamāngō te mea e whakamārama ai i te wai. Ko tēnei tārua o te whakamāngō he kōpū kōpū kōpū. Ko ngā whakamāngō kōpū kōpū kōpū he kaha, he roa te ora. Ka whakamārama i te wai i te hāngai tonu. I tēnei tuhinga, ka kōrero mātou mō te take i tēnei i whakamātautia ai ngā whakamāngō kōpū kōpū kōpū hei whakamātautanga pai mo ngā pūpū wai, me te wāhi e taea ai te rapu i ngā whakamāngō kōpū kōpū kōpū hou hei hokonga.
Ko ngā whakamātautau kōpū kōpū kōpū he whakamātautau tino pai mō ngā pampi wai i te mea he nui ngā whāinga. Ko te tuatahi, ko te kōpū kōpū he metara e kore e rere. He mea tino mātua tēnei i te mea ko ngā pampi wai e mahi ana i te wai e whai ana i te rere i ērā atu o ngā metara. I te wā e whakamahinga ana i te kōpū kōpū, ka tū tonu te whakamātautau i tēnei āhua pai mo te wā roa. Arā, he iti te wā me ngā moni e whakamahinga ana i ngā whakamātautau, i ngā whakamātautau hou rānei. Ko tēnā anō he take mō te whakamātautau kōpū kōpū, ko tana kaha. Ka taea e ia te whakamātautau i te whakamātautau o te whakamātautau, kāore he pānga. He mea tino mātua tēnei, ī ake tonu i ngā pampi e hiahiatia ana kia whakamātautau i te wai i te wā poto, i te wā roa rānei. He tauira, i te whakamātautau i te whakamātautau o te whakamātautau, kīhai koe i te whakamātautau i ngā whakamātautau pērā i te Te tāwhiri vorteks mō te whakamārama i te hāngaitanga.