Shark researchers travel to Andros Island in The Bahamas to determine if it's a new great hammerhead hotspot, and they're using reports of a half-octopus, half-shark creature known as the Lusca to help them locate massive sharks for their study.

In Mexico, legends swirl around El Demonio Negro, a 50-foot shark that has terrorized fishermen and tourists alike for generations. Is this an undiscovered predator? Forrest Galante hunts for answers in the most rugged and remote parts of the Baja Peninsula.

Two adventure seekers recount their horrifying shark attack experiences.