you're in kauai, you were 18 years old. >> yes. >> tell me more. >> early morning, paddling out with some friends. surf was pretty fun. caught a wave, and i was by myself, nice one came, as soon as i made a paddling motion, a large tiger shark came up vertically, wasn't in jaws, grabbed on to me, did the rag doll thing. out of instinct i punched it a couple times and as soon as i hit it, let go, was back underwater, disappeared, looked at my fingers, saw blood, got on my board, started paddeding in. and my leg started doing this weird shaking. i thought the shark was after me and i looked over my shoulder and my leg was just gone. completely severed. >> you should be the last person in the world, then, who would be advocating for conservation of sharks, and for sort of elevating sharks to not being demons, but being part of the health of our planet. why are you on board? >> yeah, well, these guys contacted me and gave me some numbers. and i had no idea about, mostly general population doesn't know about shark finning and i was just baffled. felt really in my position to do something