How do desert spiders survive without much water?

Desert spiders have evolved a range of ways to handle dry conditions. Many avoid daytime heat by staying in burrows, under rocks, or in silk-lined shelters where humidity is slightly higher. Their exoskeletons and excretory systems help reduce water loss, and they often feed on insects and other prey that provide much of their moisture. Some species can survive long periods between meals by slowing their metabolism. Desert-adapted spiders are found in places such as the Australian outback and North African deserts.