The team search for hammerhead sharks near Cocos Island, located off the coast of Costa Rica. For the first time, the team have onboard security in the event of a confrontation with illegal shark finners, who target hammerheads because of their large fins.
The crew find consistent success using their technique to catch great whites on tiger sharks. Later, a remotely operated vehicle armed with an underwater camera is introduced, helping the guys hook two tiger sharks.
The crew anchor at Socorro, one of the islands of the Revillagigedos Archipelago. They hook a silky shark, a silvertip shark and a tiger shark before serious electrical issues arise, threatening the entire mission.