Our second episode of Survival Stories further explores our relationship with food in the most extreme circumstances. What choices do we make about what we eat, when we’re all alone in the wild? Do our reflexes, instincts and tastes change?

First, the story of Steve Callahan, who was adrift on an inflatable raft in the middle of the Atlantic ocean for 76 days. He tells the BBC’s Emily Thomas how he began to make three courses out of just one fish, and how it felt when his only companions and friends were also his main source of food.

Plus, the tale of Yossi Ghinsberg who was lost in the Amazon rainforest. When he got separated from his group, Yossi survived for 20 days on what the forest gave him, and hoped desperately for a monkey to fall from a tree.

We also find out what happens to our bodies when they go into survival mode with Dr Chris Fenn, who specialises in survival in extreme environments. How much can we rely on our gut instincts? And should you ever drink from the sea?

(Photo credit: BBC)