The series underscore the kind of skill, strength, and savvy required to survive extreme environmental conditions. The importance of safety and knowing when to take and not take risks is also highlighted.
Disagreements about leadership, navigation, and survival tactics occasionally lead to yelling. Rifles, knives, and archery equipment are used for hunting and protection. Remnants of dead animals are visible; the explorers hunt for food, and sometimes eat raw reptiles and animal waste as alternative food sources.
Occasionally explorers strip off clothing to cross rivers; partial buttocks are visible. Occasional crude references to male genitals.