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After the show was recommissioned for a second series, almost 40,000 applied in a day.

The first season was filmed on an uninhabited Pacific island, Isla Gibraleón, which is one of the Pearl Islands off the coast of Panama.

The island has an 8 kilometer coastline, 5 beaches, a mangrove swamp, and is covered with jungle. The mangrove swamp is located on the east coast of the island where the men were dropped off, and the main sandy beach is on the west coast where the men set camp.

According to Channel 4, an island that has the natural resources necessary is chosen. Additional yuca plants are planted in order to supplement the existing supply, extra animals indigenous such as caiman are also added, and a freshwater source is topped up before filming.

Participants are given training about animals native to the island, and each receive one day's survival training, in the second series they received two days. They are also given machetes, knives, emergency medical kits and access to a radio and satellite phone in case of emergency.

The first series had an average figure of 3.1 million viewers per episode.

The second series used two islands in the same archipelago, the women reusing the island from the first series, Isla Gibraleón, while the men were allocated Isla San Telmo, which was used In the third series.