Air date: 2012-04-07

Runtime: min

The crew are joined by a fresh science team and face new challenges as they track tiger sharks in the Revillagigedo Islands.

Air date: 2012-04-14

Runtime: min

The hunt for hammerheads continues off Socorro Island, and Dr Pete Klimley hopes to uncover the mysteries of shark migratory behaviour.

Air date: 2012-04-21

Runtime: 60 min

The Shark Men are challenged as never before. They hook two giant tiger sharks, but their sheer power catches them off guard.

Air date: 2012-04-28

Runtime: min

After a long period of frustration, modified tackle brings the crew success. Two female tiger sharks, Sharon and Lizzie, are added to the tally.

Air date: 2012-05-05

Runtime: min

As the long, gruelling mission starts to wind down, the tally of tagged sharks continues to rise – along with tensions between the team.

Air date: 2012-05-12

Runtime: min

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.

Air date: 2012-05-29

Runtime: min

The team battles shark-finning poachers as they attempt to tag hammerheads in the waters surrounding the Cocos Islands.

Air date: 2012-05-30

Runtime: 60 min

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.

Air date: 2012-06-06

Runtime: 60 min

The team finally adds hammerheads to their list of tagged sharks, but the relentless pace of work is wearing some of the men down.

Air date: 2012-06-13

Runtime: 60 min

In the last days of the expedition, the team tries everything from midnight fishing to swimming with sharks to tag the elusive hammerheads.