It happened that Kupe likes Kura very much. However, Kura was already the wife of Kupe's cousin Hoturapa.
Kill the octopus!
When Hoturapa dived into the sea to free the tangled line, Kupe sliced through the anchor rope of the canoe, and began to row furiously back to shore.
Hoturapa drowned, but his family were suspicious of the circumstances surrounding his death. It was, in fact, a plan on Kupe's part to take Hoturapa's wife Kura.
In order to avoid vengeance from Hoturapa's family, Kupe and his own family left Hawaiiki in Kura's canoe Matahorua. After some time of navigating, Kupe's wife Hine Te Aparangi sighted the islands of New Zealand.
Kupe and the Matahorua eventually caught up with the giant octopus. In defence, the octopus wrapped its enormous tentacles around the canoe. Kupe threw a large water gourd overboard. The octopus, thinking that a man had fallen over, turned to attack the gourd.
Kupe seized this opportunity, and waited until the octopus was entwined around the gourd. Kupe then attacked the head of the octopus with his adze, and the octopus died.