Wes Pratt's studies of shark behavior are legendary, and to assist him in tagging and getting DNA samples from thrashing, biting subjects was more than the Discoverers crew were willing to pass up. One question, How do you get a 10 ft shark to submit to a DNA samlpling? Its not like on "CSI" where they just open up and cooperate. Wes has to chum them to the surface, a long patient excercise that can attract the beasts from miles away. There's no way to tell who is going to bite the baited hook, but fortunately the shark's healing powers are amazing and they recover well from the hook. This is part of the reason they are of such interesrt to science. After the shark is tired out, often only a few minutes, Wes is dangles over the side to take a small sample from the dorsal fin and place a tag on the creature before letting it loose. Wes has been doing this for many years and the health and safety of the shark is foremost. He has caught many sharks year after year, still its amazing to watch him grab and finesse a large shark, sometimes precariously close to that infamous mouth!