The celebrities are cast out to sea, Lucy has a moving encounter with the endangered great hammerhead shark, and Lenny opens up to Ade about his motives for being here.

Dougie has a shocking shark encounter in a shipwreck a week before the tiger shark dive, and there is a storm at sea while the team are diving with Caribbean reef sharks.

The qualified celebrity team members come face to face with 18-foot tiger sharks and find out if they can overcome their fear and learn to love these notorious predators.