Hiking equipment
According to Tom Brown, the basic plan for survival is in the order of shelter (including clothing), water, fire, and food. Cody Lundin writes about the "Rule of 3s"; this relates to human survival without basics: three minutes without air, three hours without shelter, three days without water, or three weeks without food.
Yapunyah waterhole
Aquatic organisms which lack desiccation-resistant life-stages (i.e. cannot survive ‘drying out’), are reliant on refuges during drought, as are wetland-dependent organisms which do not readily disperse, or which cannot move long distances between isolated habitats. Such animals include all fish, some macroinvertebrates, the Cooper Creek Turtle "Emydura macquarii emmotti" and water rat "Hydromys chrysogaster".