Survival skills are techniques that a person may use in order to sustain life in any type of natural environment. These techniques are meant to provide basic necessities for human life which include water, food, and . The skills also support proper knowledge and interactions with animals and plants to promote the sustaining of life over a period of time. Survival skills are often basic ideas and abilities that ancients invented and used themselves for thousands of years. Outdoor activities such as hiking, backpacking, horseback riding, fishing, and hunting all require basic wilderness survival skills, especially in handling emergency situations. Bushcraft and primitive living are most often self-implemented, but require many of the same skills.
First aid (wilderness first aid in particular) can help a person survive and function with injuries and illnesses that would otherwise kill or incapacitate him/her. Common and dangerous injuries include:
The survivor may need to apply the contents of a first aid kit or, if possessing the required knowledge, naturally occurring medicinal plants, immobilize injured limbs, or even transport incapacitated comrades.
A shelter can range from a natural shelter, such as a cave, overhanging rock outcrop, or fallen-down tree, to an intermediate form of man-made shelter such as a debris hut, tree pit shelter, or snow cave, to completely man-made structures such as a tarp, tent, or longhouse.
Making fire is recognized in the sources as significantly increasing the ability to survive physically and mentally. Lighting a fire without a lighter or matches, e.g. by using natural flint and steel with tinder, is a frequent subject of both books on survival and in survival courses. There is an emphasis placed on practicing fire-making skills before venturing into the wilderness. Producing fire under adverse conditions has been made much easier by the introduction of tools such as the solar spark lighter and the fire piston.