“After years and years of observing sharks in competitive feeding situations I have become impressed by how little aggression is shown by these animals. I often read in books when I was young that sharks can go into a frenzy and will attack and kill one another. I find this to be exactly opposite of what occurs. What I see is that sharks when competitively feeding are almost gentle and balletic. For example, if two sharks rush at a piece of bait and one clamps onto the other's head they will carefully unclamp, back up, and move off. They do not bite or hurt one another.
“Aggression between sharks of the same species seems to me to be very low; they are very tolerant of each other. White sharks might be the exception but at a big whale carcass they do not seem aggressive.
“When being handled, some species will definitely bite and others won't bite no matter how much you try. The lemon shark and blacktip shark are two examples of sharks that will definitely bite if you manhandle them. Bull sharks and hammerheads will not bite no matter what, and the same goes for tiger sharks. With tiger sharks, young ones will try to bite, older ones will not.”
~ author of The Shark Sessions ~