He wāhi mahi motuhake, he mea kati te pouaka tari ātete-oro, i hangaia hei whakarato i tētahi taiao marino, tūmataiti hoki i roto i ngā tari tuwhera nui, i ngā wāhi mahi tahi rānei. Ka whakaitihia e ēnei pouaka ātete-oro te tuku oro, ka wehea te haruru o roto, o waho hoki, ka taea ai e ngā kaiwhakamahi te aro ki ā rātou mahi, te waea muna, te whai wāhi atu rānei ki ngā hui ipurangi.