http://news.nationalgeographic.com/news/2011/03/pictures/110331-pakistan-flood-spider-trees-webs Here's a couple of pictures. There's a lot more at the link. Trees shrouded in ghostly cocoons line the edges of a submerged farm field in the Pakistani village of Sindh, where 2010's massive floods drove millions of spiders into the trees to spin their webs. Beginning last July, unprecedented monsoons dropped nearly ten years' worth of rainfall on Pakistan in one week, swelling the country's rivers. The water was slow to recede, creating vast pools of stagnant water across the countryside.... I don't want to be around when they decide to come back to the ground.