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It's been 12 hours since they landed their last shark and the team are on the holy grail for a female Great White.

It is the moment of capture. A Great White takes the bait, now every second and every action counts for the Shark Men.

The team continues to improve the cradle to ensure the shark stays inside while scientist and fishermen talk tactics.

The Island of Guadalupe is a breeding ground for elephant and fur seals; preferred prey for the Great Whites.

The Shark Men expedition may have more than they bargained for when an exceptionally large Great White takes the bait.

The crew try a new buoying technique but run into difficulty when they hook a Great White while their ship is still anchored.

How do you coax a two ton fish into such a small trap? The crew perfect the cradle for their next Great White opportunity.

With new crew members and a whole new toolkit the Shark Men are optimistic… until the support boat blows an engine.

A Great White takes the bait - now the hard work begins as the crew negotiate the predator onto their ship for research.

The Shark Men have successfully tagged a female Great White and the crew take a look at the seal inhabitants of the Island.

Blood samples are needed from a female Great White to determine whether Sharks are mating at Guadalupe Island, or not.

If we lose sharks our marine ecosystem would be dramatically changed, but not necessarily for the better.

Tagging Great Whites is advancing research and providing key information about how to protect this vulnerable predator.