Nerve-wracking footage has emerged from South Africa as a large white shark is seen aggressively attacking another, smaller, white shark as divers looked on yesterday (October 4).

The rare event took place in Mossel Bay on the south coast of the country, as we can see the larger shark fail to catch a piece of dragged bait, causing it to turn and savage a smaller shark nearby.

The incident shocked the caged divers watching underwater, and demonstrates the way at times a shark's behaviour can quickly change in an instant.

The filmer said: "The smaller shark left the area after the incident"

This very rare event was caught on film in Mossel Bay South Africa. This video shows how quickly a sharks behavior can change with no warning. In the back you can hear nervous screams and shouts as the cage divers look on. The smaller shark left the area after the incident