on the back of this tiger shark, seven feet long, is elliot grant sedall, a researcher charged with the task of tagging sharks. he's caught this one. that's his hook right there. he can take that hook out. >> mine's out. check this out. >> there's another hook in the shark's mouth. looks like it's been there for quite some time, kind of rusty, embedded in the shark's there good. look comf hta band aid pops that hook out. but the job isn't over. again, he's doing research. tagging of animals is designed to help track migration routes, breeding behaviors, and. >> at least he was wearing all the safety equipment. this kind thin if youon what you're doing, don't attempt to tryo catch k,is safety gear, i believe, is all right up here.s reporter w interviewing a firefighter about a situation that just had taken place. notice the car pull up. there's an agent behind him and a few fellas get out. one of them just takes off running. >> seems like a pic happening? >> yes, right in the middle of the intervie like any goodphotographer, this one kept rolling andt suspect kept running, he's out. >> t