Two adventure seekers recount their horrifying shark attack experiences. Off the coast of Australia, a spearfishing expedition turns into a nightmare featuring a ferocious bull shark and a great white attacks a paddle boarder on Ascension Island.

As the number of great white shark encounters on Cape Cod spikes, shark expert Dr. Greg Skomal breaks out cutting-edge tech to capture the white shark's point-of-view – revealing exactly how and where they hunt in the summer to better protect the public.