A spider web is a sticky net that spiders make from silk to trap their prey. When insects fly or crawl into the web, they get stuck and the spider eats them. Most spider webs are very thin, but are also very strong. Different kinds of spiders make different types of webs. Spiders make different webs in different places to trap many kinds of prey.
A spider web, with dewdrops caught on it.
A spider on its web.
Another photo of dewdrops on a spider web.