Caption from YouTube:
Andrew Dober, Jason Livesy and Bahamas guide Samuel “Sparkles” encounter a Hammerhead shark chasing down a lemon shark. The Hammerhead is estimated at 10-12′ and the lemon shark is estimated at 4′ Andrew caught this on video with a Canon A700 camera. This group traveled to the Bahamas through a trip coordinated by Wayne Walts of the Troutfitter flyshop in Syracuse, NY