Jay, Blowfish and Charlie's mission takes them to Kenya in search of Africa's largest freshwater fish, the Nile Perch. To catch it they'll endure a 500 kilometre bone-shaking drive across some of Kenya's toughest terrain.

Every autumn millions of salmon run up the rivers of British Columbia to spawn. But after months of drought the guys are forced to venture deep into the mountains to find the fish.

Native to the Indo-Pacific but accidentally introduced to the Caribbean, Lionfish are decimating the island ecosystems.

Freediver and spear-fisherman Jay wants the boys to join him in taking on a mighty Giant Moray Eel. They seek out the help of world renowned freedivers, the nomadic Sea Gypsies, to learn how to take on these seas, and these huge fish.

In this episode the team's mission takes them to the barren icy mountains of Patagonia, in search of a deep-sea delicacy. The Patagonian Toothfish sells for $100 per kilo in the fish markets of North America.

The lads are in Laos in search of a huge, terrifying catfish with a history of attacking humans - the Devil Catfish. The best place to find them is near the mouth of the Mekong, where locals believe the waters hide the underworld.