Sharks really eat anything. Most shark bites are actually just the shark checking to see what something is (no hands, can't touch things).
Do sharks really eat humans?
FEW animals are more fear-inspiring than sharks. Worldwide, there are, on average, an estimated 75 unprovoked shark attacks on humans each year, about 10 of which are fatal. Those widely publicized attacks, plus the negative image projected in movies, portray the shark as a man-eater. Of course, sharks must be treated with respect. Putting the matter in perspective, however, many more deaths are caused by bee stings and crocodiles than by shark attacks.
I saw this picture doing the rounds on Facebook, and thought it summed up the dynamic between humans and sharks quite nicely:
Not to say that I'd go diving into shark-infested water, you've still gotta respect their personal space!