How best to fight off a shark:
Bernie Williams, a 46-year-old Australian scuba-diver, fought off repeated attacks by an 11ft (3.5m) shark by hitting it on the nose with his speargun.As is most often the case, he didn’t see the shark coming until it bit him.
Mr Williams said: ‘It just came out from my left hand side… chomped on my arm and took me for a ride for about two metres.
‘I stabbed it on the nose with a speargun, but it was just like hitting a lump of steel. It didn’t slow down in the slightest.’
The shark retreated before making another attack on Mr Williams, giving him just enough time to hide in a crevice near the ocean floor until his diving buddies came to the rescue.