All-stars Fernando and Dani land in a rainforest in Ecuador for their third challenge, where jaguars, caiman, anacondas and bullet ants are on the prowl; their divergent approaches to primitive survival might do them in.

Survivalist Lynsey copes with her lone-wolf partner Darvil in South Africa.

Three young survivalists test their skills in the coastal rainforest of Ecuador, where they risk their lives scaling a massive rock cliff to forage for food.

Two teams of international survivalists attempt to endure in South Africa.

Two fan survivalists are in over their head in brutal South Africa.