never seen this

Baby spiders
Spiders lay eggs, when they do that, they do it in an extra thick spider web. They lay between 100 and 200 eggs at a time. They put all of them on the web and they make a big sphere out of that, we call that an egg package. It takes about two months for the egg package to open. Two weeks before it opens, the baby spiders already come out of their egg but not yet from the egg package. They are still white and that means that they do not need any food yet. If after about two weeks every baby spider is ready to come out of the egg package, they gnaw the egg package open.