Shark! 1-6

The celebrities deal with the aftermath of a medical emergency, and then attempt the Line of Terror - which brings them eye to eye with Caribbean reef sharks in the middle of a feeding frenzy.

Six Aussie celebs head to a Bahamas sanctuary to face their fears. Guided by experts, they brave escalating shark encounters, starting with a terrifying bull shark cage dive, to turn their deep-seated terror into fascination.

The celebrities complete a nerve-wracking open water swim across shark infested waters. They later attempt their first scuba dive in the Bahamas, which quickly turns dangerous when one celebrity encounters serious trouble under the water.