Yes mate they are totally soul less and it is what I would imagine looking into the eyes of old nick would be like. I have a confession, when I went cage diving, possibly same place as you off the coast of S.A, I refused to get in the cage.The reason been the first lot of divers were in the cage viewing a medium sized shark when all of a sudden the shark tried to get its head into the cage first and when that was unsuccessful tried to force itself between the cage and the boat I assume to move the cage away and try and break into it at ite leisure, tinned meat you might say. Anyway that was enough for me and when the dive master called for next set of divers I flatly refused to come down from the viewing veranda. I did manage to see and photograph 8 different great whites that day which was a bit special we were told as other boats in the area had spent hours there and not seen one. Looks like we chose the right charter skipper and it's certainly a day I'll never forget.