Plenty of animals build their homes in oak trees. But some very teeny, tricky wasps make the tree do all the work. “What nerve!” you might say. What… gall! And you’d be right. They’re called gall-inducers. And each miniature mansion the trees build for the wasps' larvae is weirder and more flamboyant than the next.
Here is a video of a video camera that was found in a river. Someone lost it when their raft overturned and it continued to record for many hours as it rolled downstream. It was submerged for 17 months if the time-stamp is correct. The guy who found it edited out most of the "stuck in one place" video. If it's yours, contact him and he will send it back free of charge.