In Hawaiki there once lived a chief called Uenuku, who had seventy-one sons. Uenuku had one wife who was a slave, and because of this, her son Ruatapu was of no importance.
One day, Uenuku wanted to build a magnificent canoe. He would get a tree and hollow, smooth and carve it into a canoe.
Let's go build a canoe!
Uenuku himself combed, oiled and tied their hair into top-knots for the occasion.
I look nice.
When it was night, Ruatapu snuck out to the canoe and drilled a hole in it, so water would get in and his brothers would drown. He covered the hole with chips of wood, so no-one would know what he did.
In the morning, they launched the grand canoe out to sea, and Ruatapu went with them. They paddled until they were out of sight of land, and then Ruatapu pushed the chips of wood away from the hole and water rushed in.
But Ruatapu hid the bailer, and all his brothers drowned, except Paikea, who escaped. Ruatapu did his best, but he drowned himself in the process, and Paikea escaped on a whale. The whale became an island, and you can see it today.