[Blitzer:] Sharks moving passed Florida beaches, well, that's certainly getting a lot of people's attention on the sand. Others are wading in so they can stare right into the mouths of the sharks. CNN's John Zarrella reports, what they're finding could save the lives of shark bite victims.
[John Zarrella, Cnn Correspondent:] No one went in the water, the sign warned sharks. A lot of them migrating north were close to shore off Palm Beach, bad for swimmers and good for shark fisherman, Joshua Jorgenson. He had one hooked quickly, fighting it through the waves. Jorgenson working fast got it close enough to grab and pull it to the beach. This wasn't about sport. It was about research.
[Unidentified Male:] Watch out, watch out, watch out.
[Zarrella:] Jorgenson and Nova South Eastern University Assistant Professor Nathan Unger
[Unidentified Male:] It's 6'1."
[Zarrella:] are hunting bacteria in the mouths of sharks.
[Unidentified Male:] We're going swab the mouth of the shark around the teeth and the gums.
[Zarrella:] Once the samples taken, the shark is released. They're hoping to find out what bacteria sharks carry and whether it's the same in every species.
[Assistant Professor Nathan Unger, Nova Southeastern University:] We're pursuing tiger sharks.
[Zarrella:] One of the biggest problems doctors face when treating a shark bite is not knowing what antibiotic will work to fight infection because they don't know what bacteria they're up against. Ask Anthony Segrich.
[Anthony Segrich, Shark Bite Victim:] The first bite went through the kneecap and the ankle at the same time and it was about 17.5 inches wide, the mouth.
[Zarrella:] Segrich was spear fishing off Palm Beach two years ago when he was attacked by a 10-foot bull shark, the most vicious there is. He underwent five major surgeries and five weeks in the hospital, much of the time fighting infection that could have cost him his leg.
[Segrich:] You name the antibiotic I had it at that point. They hit you with everything.
[Dr. Robert Borrego, Trauma Director, St. Mary's Hospital:] The biggest problem is once with infection sets in and the patient is in the hospital a lot longer than if there was no infection and the whole care becomes a lot more complicated.
[Zarrella:] St. Mary's Hospital in West Palm Beach where Segrich was treated is participating in the research project.
[Borrego:] What they'll do next is they'll take this and they'll put it in the slide.
[Zarrella:] If they can isolate bacteria sharks carry they'll know what antibiotics work best perhaps a game changer for doctors fighting to save a bite victim's life. As for Segrich [on camera]: Here's the question, have you been back diving again?
[Segrich:] As luck would have it, on the very first time, back on scuba, a 7-foot bull shark came by. Check this out
[Zarrella:] No.
[Segrich:] Yes.
[Zarrella:] No fear. John Zarrella, CNN, West Palm Beach.
[Blitzer:] Amazing story. John also tell us, by the way, they've taken samples from 20 sharks so far and they're hoping to increase that to 100. Let's hope they figure this out. Just ahead, private information related to the first lady of the United States. Michelle Obama, the former secretary of State, Hillary Clinton and the vice president, Joe Biden splashed, guess what? All over an internet site. There's an urgent investigation underway. We'll have full details. That's coming up at the top of the hour.