The ragged tooth shark can be seen biting the diver on the arm and thrashing him around in the water.
The diver was trying to assist the shark due to it being heavily pregnant.
He was treated for serious wounds on his arm after being pulled out of the blood-filled water.
He has since made a full recovery.
The ragged tooth shark is also known as the sand tiger shark or the grey nurse shark.
Like all sharks, they are rather frightening in appearance but this species is known to be relatively docile and only likely to make an attack if cornered or provoked.