Great white sharks are feared man eaters - but this monster was in the mood for a spot of cannablism. The vicious shark burst from the water to rip into another great white, cementing the giant marine mammal's reputation as the ocean's most fearsome predator. The sensational moment was caught on camera by 33-year-old Adam Malski. Mr Malski had been enjoying the picturesque views off the Neptune Islands, South Australia, when a shark measuring 2.6m ate the bait off the side of their boat. A split second later a shark double the size broke through the surface of the water and sunk its razor-sharp teeth into its rival's head - much to the amazement of the people on board the boat. Scroll down for video . The shark (left) sunk its teeth into the other great white which was half its size . The other shark was only 2.6 metres long when the attack happened off the Neptune Islands in South Australia . The smaller shark was eating the bait off the side of the boat at the time of the unexpected attack . Mr Malski, who is from London but now lives in Sydney, had been diving earlier that day and spotted the shark - known as 'Gilbert' to the locals - underwater hours before. He said the trip consisted of two full days of bottom (15-25m) diving and surface diving and a day of transit either side. 'The day where the shark attacked the other was surreal. I asked the dive master and skipper of the boat what would happen if a smaller shark got in the way of a larger shark,' he said. 'The skipper responded, 'The big shark would take the smaller one down'. 'Literally six seconds later, that amazing scene was witnessed by me, the skipper and the dive master. 'They had never seen anything like it before. I believe that it is extremely rare footage as great whites are elusive and still largely unknown creatures.' Despite witnessing the brutal attack, Mr Malski says his diving trip changed his view on sharks. 'I spent many hours observing them in their territory and up close and saw 18 magnificent creatures in total. All of which were inquisitive but not aggressive,' he said. 'Even when one bumped my hand and camera when I was 20 metres underwater, there was no aggression - just inquisitiveness.' Gilbert has since been spotted in the waters around Neptune Islands - but the smaller shark has not been seen since. The skipper said 'the big shark would take the smaller one down' 'Literally six seconds later, that amazing scene was witnessed by me, the skipper and the dive master,' Adam Malski said . The huge predator is know to locals as 'Gilbert' and Mr Malski had seen him earlier in the day . The sensational moment was caught on camera by the 33-year-old .
Adam Malski was diving off the Neptune Islands in South Australia .
A shark measuring 2.6m ate the bait off the side of their boat .
When another great white - double its size - sunk its teeth into the mammal .
The huge predator, who is known to locals as 'Gilbert', has been seen since .
But the smaller shark has not been spotted since the attack .
Great white sharks are feared man eaters - but this monster was in the mood for a spot of cannablism. The vicious shark burst from the water to rip into another great white, cementing the giant marine mammal's reputation as the ocean's most fearsome predator. The sensational moment was caught on camera by 33-year-old Adam Malski. Mr Malski had been enjoying the picturesque views off the Neptune Islands, South Australia, when a shark measuring 2.6m ate the bait off the side of their boat. A split second later a shark double the size broke through the surface of the water and sunk its razor-sharp teeth into its rival's head - much to the amazement of the people on board the boat. Scroll down for video . The shark (left) sunk its teeth into the other great white which was half its size . The other shark was only 2.6 metres long when the attack happened off the Neptune Islands in South Australia . The smaller shark was eating the bait off the side of the boat at the time of the unexpected attack . Mr Malski, who is from London but now lives in Sydney, had been diving earlier that day and spotted the shark - known as 'Gilbert' to the locals - underwater hours before. He said the trip consisted of two full days of bottom (15-25m) diving and surface diving and a day of transit either side. 'The day where the shark attacked the other was surreal. I asked the dive master and skipper of the boat what would happen if a smaller shark got in the way of a larger shark,' he said. 'The skipper responded, 'The big shark would take the smaller one down'. 'Literally six seconds later, that amazing scene was witnessed by me, the skipper and the dive master. 'They had never seen anything like it before. I believe that it is extremely rare footage as great whites are elusive and still largely unknown creatures.' Despite witnessing the brutal attack, Mr Malski says his diving trip changed his view on sharks. 'I spent many hours observing them in their territory and up close and saw 18 magnificent creatures in total. All of which were inquisitive but not aggressive,' he said. 'Even when one bumped my hand and camera when I was 20 metres underwater, there was no aggression - just inquisitiveness.' Gilbert has since been spotted in the waters around Neptune Islands - but the smaller shark has not been seen since. The skipper said 'the big shark would take the smaller one down' 'Literally six seconds later, that amazing scene was witnessed by me, the skipper and the dive master,' Adam Malski said . The huge predator is know to locals as 'Gilbert' and Mr Malski had seen him earlier in the day . The sensational moment was caught on camera by the 33-year-old .
water to rip into another great white, cementing picturesque views off the Neptune Islands, South Australia, when a shark measuring 2.6m ate the bait off the side of their boat. A split second down for video . The shark (left) sunk its teeth in South Australia . The smaller shark was eating the unexpected attack . Mr Malski, who is from since been spotted in the waters around Neptune Islands - but the smaller shark has not been seen said . The huge predator is know to locals as