 Additional yuca plants were planted in order to supplement the existing supply, extra animals indigenous to the islands such as caiman were also added, and a fresh water source was topped up before filming.The participants were given training about animals native to the island that are on the protected species list, and each received one day's survival training, including advice on how to catch and humanely kill caiman.The men were given machetes and knives, head torches, an initial one-day water supply, and an emergency medical kit.