AdvertisementA Marine Ecologist On Swimming With Sharks And What 'Jaws' Got Wrong30:16Download AudioResumeJuly 14, 2016facebookEmailMarine ecologist Neil Hammerschlag says he can sometimes identify sharks like Emma (pictured) by the way they move. "It's pretty cool to be able to jump in the water and say, 'Hey look, there's Emma the tiger shark!' " (Neil Hammerschlag)