In this Mega Episode, Sharks face off against the most dangerous marine predators. Featuring full episodes: Great White vs. Tiger Shark Up close and personal with some of the largest great whites and tiger sharks ever recorded, including the famed great white Deep Blue. Bull Shark vs. Hammerhead Shark experts launch an investigation into bull sharks and great hammerheads after a rare video is discovered that shows them going head-to-head. Orca vs. Great White Researchers in New Zealand dive