I don't want to pick up too many things we don't need. But, if something changes and I happen to be in the market for a dresser or a Longaberger basket, I know how — and where — to start the hunt.

Armed with just a hand spear, we set out to survive on a remote island using only what we could catch ourselves. Hunting in the shallows, cooking over fire, and adapting to the wild—this was raw ...