http://losangeles.cbslocal.com/2011/09/27/surfers-rescue-injured-great-white-shark-near-venice-pier/ “ 'He didn’t say a word to anybody . . . and he just started digging to get the hook out of the shark’s mouth. I don’t know how he didn’t get bit, quite frankly. You could see the rows of teeth',” she said."
I'll tell you how -- Great White sharks are highly intelligent, that's how! This one knew the man was trying to help him -- and didn't bite.
And see
Surfers Rescue Baby Great White Shark (VIDEO) There are people who think I'm crazy because I don't dote on dolphins, but do dote on the big
lamnid sharks, such as Great Whites. I do not recommend just jumping in the water to play with them -- in the water, we resemble seals, which they love to eat, and our social signals and their social signals just don't mix. But
Orcas, whales that are known to be highly intelligent, are more likely than Great Whites to prey on us if we get into their natural environment with them, and deadliness by itself isn't the issue. As more and more studies of Great Whites are done, it is becoming evident that we have not begun to fathom the extent of their intelligence, or, in fact, its nature, and that many more studies need to be done on them if we are ever to have an understanding of them. They look fearsome, yes, but they need to be built that way to be able to catch their food; and because they do so much of their hunting and interacting with others of their kind in deep water, where it is dark enough that their "faces" are just indistinct blurs, their social signals among themselves have little, if anything, to do with the way they look. The play of their muscles and internal organs as shown by sonar and detectors of electromagnetic fields is far more significant when it comes to judging their moods and impulses than their "facial" areas. Someday, accepting that, we may finally begin to truly communicate with them.
Meanwhile, somewhere
St. Francis d'Assisi is smiling down on the sharks . . . (And just who was that masked man who rescued the shark down at the pier, Kimosabe?)