The incredible footage shows the sharks leaping out of the water and biting each other off the coast of Australia.
Malski had been on a diving trip near the Neptune Islands, south Australia, when one of the sharks took a bite out of a piece of bait off the side of the boat.
Malski told Barcroft Media: “The day where the shark attacked the other was surreal."
“The skipper responded, ‘The big shark would take the smaller one down.'"