Luke managed to then catch a king fish, which dragged him around by the spear for 10 minutes.
'The sharks weren't touching the kingy (king fish) which was good, they were just sort of lurking,' he said in the short video.
The pair got the fish closer to the surface and the sharks swarmed.
'I went down to jab one and another flew right over my head,' Luke said.
'We were calling out for the boat, and yeah it was pretty intense.'
Once back on the boat, the pair are clearly shaken by the ordeal.
But this is not the first time he has found himself up close and personal with copper sharks.
In Luke's local dive spot, Tiritiri Island in the Hauraki Gulf of New Zealand, a fearless shark 'cruised right over his head,' as he hunts for snapper.
The shark then comes back to have a look, before Luke taps the creature on the tail with his spear and it quickly swims away.
'Sharks are still out there in numbers,' he said.
Luke and his team spear fish in four locations within the Hauraki Gulf.
Leigh, Tiritiri Matangi Island, Little Barrier Island and Mokohinau Island are their dive spots of choice.
To attract snapper and king fish, they dive to bottom of the reef and break open sea anemones so their flesh entices the unsuspecting fish.
- Daily Mail