Shark Gordon's off to the Sea of Cortez to after his next quarry: hammerhead sharks. Dive in and see the wonder of an underwater mountain as Gordon and his crew scour it for the elusive schools of hammerheads that are said to frequent the area.

Until remote cameras were invented, no one had ever seen the prickly shark in its natural environment. But recently scientists have discovered them in shallower water. And of course, Shark Gordon is hot on the scene to check out these mysterious sharks.

Off the coast of a small Indonesian island, Ian finds a population of Palagic Threshers performing strange behaviors. He's determined to get to the bottom of it, diving with one of the world's rarest sharks.

It has long been believed that shark attacks are a result of mistaken identity; sharks mistake humans for other fish. But can sharks really not tell the difference? Shark Gordon intends to find out by spending time with one of the deadliest sharks.