One day he hid in the bottom of his brothers' boat as they went on a long fishing voyage. Maui used his magical powers to increase the distance back to shore so when he was discovered his brothers would not take him back home.
When they were far out into the ocean, Maui dropped his magic fishhook over the side of the (waka). He felt a strong tug on the line, too strong to be a normal type of fish. Maui called on his brothers to help. After quite a struggle they pulled up the North Island of New Zealand - which, since that day, has been known to Maori as Te Ika-a-Maui (the fish of Maui).
Since then, the South Island of New Zealand has been known as Te Waka a Maui (the canoe of Maui). The third (smaller) island lying to the south of New Zealand is known as Te Punga a Maui (Maui's anchor), as it was the anchor for Maui's canoe. In English it is known as Stewart Island.
Later Maui went to make peace with the Atua (spiritual powers or gods). His brothers argued about who would control this newly discovered land. As they argued and fought their weapons created the many mountains and valleys that cover Te Ika-a-Maui (the North Island).