Tarpon don't eat people; they pretty much stick to fish, shrimp, and crabs.
Al, that's a barracuda. They got's teeth. I know; I've bled on them before. A tarpon is basically a giant herring. It has no teeth. That said, I've no doubt that there were sharks in that water. If they're catching tarpon and jacks, the sharks are there. But whatever swims there, the video was awesome, wasn't it?