1. Eye of the Tiger Shark

The teams grab their cameras and diving gear and hit the turquoise waters of the Maldives, where rare silvertips lurk and ferocious tiger sharks circle.

2. Sharks After Dark

Along Australia's Great Barrier Reef, the teams get the rare chance to dive at night. Between bamboo sharks and wobbegongs, the race is gill and gill.

3. Land of the Rising Sharks

Brutal currents and jellyfish stings make Japan the most challenging dive yet — but the prospect of seeing a sharknado keeps the group's spirits afloat.

4. Chum and Get It!

Low visibility and an imminent elimination create choppy competition in South Africa. Still, the teams are determined: Will they find a great white?

6. The Grand Fin-Ale

The finalists duke it out in the Galápagos, a shark-rich hotspot. Can they snap a photo of an ultra rare whale shark — or will a killer get in their way?