that just, really are impactful. >> reporter: there are shark savants like mark healy and then thrillhark, threw the cage behind me. and kept me from getting eaten. got to thank the cage, really. >> reporter: don't try that at hope. then there is this guy from florida who caught a ride on a whale shark in the gulf of mexico. >> i decided you know what i should maybe go try to swim with them. i might not be able to do it every again. >> it is also look this thrilling, exciting adventure. people want that now. people don't want the ordinary

that just, really are impactful. >> reporter: there are shark savants like mark healy and then thrill seekers like this australian who used a cage sort of. >> i tornado arouurned around, shark, threw the cage behind me. and kept me from getting eaten. got to thank the cage, really. >> reporter: don't try that at hope. then there is this guy from florida who caught a ride on a whale shark in the gulf of mexico. >> i decided you know what i should maybe go try to swim with them. i might not be able to do it every again. >> it is also look this thrilling, exciting adventure. people want that now. people don't want the ordinary. they want the exciting, thrilling, awesome adventure. and sharks can deliver. >> reporter: shark tourism has grown into a $300 million a year industry. with more than 80 shark diving centers in 29 countries. [ bleep ]. >> reporter: and with shark week an annual event on the discovery channel you could call sharks the ocean's new celebrities. but sharks do bite the so far this year there have been 12 confirmed bites and just this month, a woman was chomped by a sma