Overview: The crew are joined by a fresh science team and face new challenges as they track tiger sharks in the Revillagigedo Islands.
Overview: The hunt for hammerheads continues off Socorro Island, and Dr Pete Klimley hopes to uncover the mysteries of shark migratory behaviour.
Overview: The Shark Men are challenged as never before. They hook two giant tiger sharks, but their sheer power catches them off guard.
Overview: After a long period of frustration, modified tackle brings the crew success. Two female tiger sharks, Sharon and Lizzie, are added to the tally.
Overview: As the long, gruelling mission starts to wind down, the tally of tagged sharks continues to rise – along with tensions between the team.
Overview: Expedition leader Chris Fischer pushes the team to the limit as they seek one more tiger shark and three more silvertips before leaving the area.
Overview: The team battles shark-finning poachers as they attempt to tag hammerheads in the waters surrounding the Cocos Islands.
Overview: When Todd hooks a giant tiger shark and the divers abandon a scientist in dangerous waters, it leads to a growing divide over safety issues.
Overview: The team finally adds hammerheads to their list of tagged sharks, but the relentless pace of work is wearing some of the men down.
Overview: In the last days of the expedition, the team tries everything from midnight fishing to swimming with sharks to tag the elusive hammerheads.