As Celebrity Island with Bear Grylls concludes its second series tonight and here's just how its filmed and made.
This year's series has seen the celebs' hunger relieved by pineapples before they chanced upon a crocodile in a swap.
There have been claims of fakery from some viewers but Bear and his team have been very transparent about how the show works.
As with the main series of The Island, the Celebrity Island sees a number of (celebrity) contestants dropped off on an inhabited island.
Before the show kicked off, Bear and his team prepped the island to make sure that it could - in theory at least - support the contestants for the duration.
In past series, this has included adding extra wildlife and vegetation indigenous to the area including water sources, paca, turkeys, iguanas, caiman, boa constrictors, coconuts, sugar cane and yucca.
But Bear insists that it is still up to the Islanders to find these resources and exploit them.
The celebrities are also provided with some starting supplies which included six knives, six machetes, fishing equipment, head torches, whistles, and a medical kit.
And before the show, the contestants were given a two day crash course in survival including basic first aid, lighting fires, water purification and the humane dispatch of animals.
The Islanders also each have an emergency satellite phone to contact Bear and his team in case of real problems.
In addition, one of the contestants on The Island is a qualified doctor.
When it comes to how The Island is filmed, recording is undertaken completely by the contestants themselves using a range of equipment.
A number of the islanders are trained camera operators, taking part in the show like any other contestant.
But everyone had a go at shooting both with handheld cameras and GoPro cameras attached to them having been given some basic film training before starting.