A spider's web is probably its most remarkable achievement, and they usually like to spin webs at night. The webs can be very strong, and some, like the giant wood spider's web, have been known to snare birds and bats, and can even resist a person walking through them. In New Guinea, there is a small spider that weaves a web about six feet in diameter. The natives set up long bamboo poles at the thickest part of the web, and by the next day the spider have woven its web around the bamboo. This creates a very useful 'spider web fishing net' which the natives use to catch fish.
Spiders keep a web secure by constantly checking it.
If the tension is not right, they adjust it. If a thread is destroyed, they replace it. The construction of the web is very important because the web is primarily designed to capture insects. When the insect lands on the web, the spider feels the vibrations, comes to the prey, bites it and wraps it in silk, although not all spiders bits first. Some wrap, then bite.