"When I saw the shark I thought it was awesome. It swam up to the boat and around the back. He was never really threatening but let us know the whale was his."
Mr Wilson, along with his wife and nephew, were just metres from a scene straight off the Discovery Channel, he said. He had seen plenty of sharks but nothing that compared in size to the great white.
When they started motoring for home at Tapuaetahi the shark zigzagged behind them for about 400m, then returned to the whale carcass to finish its meal.
The little that remained of the whale was found on Takou Bay on Sunday morning.
Ngati Rehia kaumatua Waitai Tua went to the beach to investigate and see if the head or ribs could be recovered.
However, all that was left after the shark's feast was a 2.5m section of backbone and some decomposing flesh. After gathering up other fragments he performed a karakia and asked his mokopuna to bury it.
The karakia was "to keep everybody safe" and a mark of respect to Tangaroa, who supplied food at Takou Bay.