Dr. Hazin appears on Shark Week for the 1st-time by traveling to Brazil to reduce the number of shark attacks by simply catching & moving sharks to the open sea. What's his secret? Can this solution work in Australia, where attacks are a problem?

Ornella Weideli returns to Shark Week with Dr. Tristan Guttridge to find out why sharks come together at various times of the year and in different locations around the world to socialize, hunt, swarm, and spiral.

Shark Week goes to Madagascar, a place NOT known for great white sharks. So why has a great white from South Africa made the 1500-mile trip? Craig O'Connell and the team make the trip to find out why and if this is the next great water hotspot.